Easy To Use Patents Search & Patent Lawyer Directory

At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.

Searching: chemistry





Search by keyword, patent number, inventor, assignee, city or state:




Patent # Description
US-5,523,878 Self-assembled monolayer coating for micro-mechanical devices
A method of forming of a monomolecular coating (19) for surfaces of contacting elements (11, 17) of micro-mechanical devices (10), specifically, devices that...
US-5,522,994 Single column chromatographic determination of small molecules in mixtures with large molecules
A process for separating small molecules from a sample containing small and large molecules using a porous separation medium having bimodal chemistry wherein the...
US-5,516,625 Fill and etchback process using dual photoresist sacrificial layer and two-step etching process for planarizing...
To planarize an oxide-filled shallow trench-isolated semiconductor architecture, a composite photoresist sacrificial layer is initially formed on the...
US-5,515,406 Internal passive catalytic ammonia converter for reduction of main steam dose rate associated with hydrogen...
A passive catalytic ammonia converter operating in the water/steam mixture exiting the core of a boiling water reactor. The catalytic ammonia converter is made...
US-5,514,337 Chemical sensor using eddy current or resonant electromagnetic circuit detection
An instrument is applied to the measurement of chemical species and concentration through the use of a chemically-sensitive coating on the eddy current coil or...
US-5,512,492 Waveguide immunosensor with coating chemistry providing enhanced sensitivity
Methods and apparatus for evanescent light fluoroimmunoassays are disclosed. The apparatus employs a planar waveguide and optionally has multi-well features and...
US-5,512,130 Method and apparatus of etching a clean trench in a semiconductor material
An etching apparatus (10) includes a process chamber (12) partially surrounded by an upper electrode (14) and a lower electrode (16). A semiconductor material...
US-5,510,213 Method of preparing electrodes for lead-acid electrode battery
The invention provides an electrode for a lead-acid battery, formed in an essentially continuous process without the need for curing under controlled temperature...
US-5,506,220 Anti-glaucomatous pharmaceutical composition and the process for obtaining them
The invention relates to the domain of medicinal chemistry. It concerns more particularly that of the preparation of pharmaceutical compositions for ocular...
US-5,505,987 Processes for improving the bond between hydrating cement-based materials and existing cement-based substrates
Cement compositions and processes for improving the bond between new hydrating cement-based materials and the surface of "old" cement-based substrates are...
US-5,505,828 Calibration solutions useful for analysis of biological fluids and methods employing same
Novel calibration solutions are provided which are useful, for example, with sensor assemblies used for analysis of CO.sub.2, and optionally, for concurrent...
US-5,504,411 Battery charger contact protection circuit
A battery charger contact protection circuit (10) including a metal oxide field effect transistor (16) is provided. The battery charger contact protection...
US-5,502,236 Method for the production of (3-alkoxycarbonyl-2-butenyl)triphenylphosphonium salts
Novel processes and intermediates useful for the manufacture of the Wittig ester salts are disclosed. The Wittig ester salts are known as important CS building...
US-5,502,226 Process of preparing .omega.-hydroxy acids
A new synthesis of .omega.-hydroxy acids, which employs commercially available starting materials and lowers the cost of production. The process involves...
US-5,502,025 Safening herbicidal pyrazolylsulfonylureas
The disclosure herein relates to the safening of crops from injury by herbicidal pyrazolosulfonylureas alone or combined with co-herbicides from various classes...
US-5,494,590 Method of using anticoagulant solution in blood separation
An anticoagulant solution of sodium citrate for use in blood chemistry-related techniques and apparatus is disclosed. The anticoagulant solution should include...
US-5,494,258 Valve
A valve for regulating the flow of a liquid, for example in liquid chromatography, comprises a valve seat and a valve ball which are made of electrically...
US-5,492,597 Method of etching WSi.sub.x films
The present invention teaches a method for etching a tungsten silicide (WSi.sub.x) film overlying a polysilicon film in an enclosed chamber during a...
US-5,489,678 Photolabile nucleoside and peptide protecting groups
A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to...
US-5,487,954 Non-acicular modified high coercivity iron oxides for high density magnetic recording and the processes of...
The non-acicular modified maghemite and magnetite have high coercivity of, for the maghemite, up to 2200 Oe, saturation and residual magnetization of 63-85 emu/g...
US-5,486,112 Autonomous wearable computing device and method of artistic expression using same
Educational devices using process-oriented educational methods are disclosed to prepare pre-school children, school children, and teenagers for keyboarding. The...
US-5,482,608 Capillary electrophoresis flow control system
A system for controlling the bulk flow rate in capillary electrophoresis employs pressure to increase velocity without unacceptably increasing plate height....
US-5,476,924 Protecting group for acetals and methods of using the same in the activation of saccharides
The present invention relates to a method of protecting the hemiacetal or acetal group at the anomeric carbon of a saccharide molecule comprising forming a...
US-RE35,127 Non-halogenated insulation with high oxygen index
The invention features in synergistic combination a new chemistry for fabricating wire and cable insulation and heat-shrinkable tubing and an irradiation process...
US-5,475,800 Color separation in color graphics printing with limited memory
In liquid-ink color graphics printing, true black ink is preferred over composite black wherever possible, but poor print quality results from printing black ink...
US-5,475,461 Photographic processing apparatus
A photographic processing apparatus which incorporates a drum arrangement to form a low volume processing tank. The arrangement comprises a processing tank in...
US-5,475,048 Conductor-filled thermosetting resin
Conductor-filled thermosetting resins having a free radical based cure chemistry are prepared for use as solder paste replacements for electrical conducting...
US-5,470,772 Silicidation method for contactless EPROM related devices
A process for fabricating contactless electrically programmable and electrically erasable memory cells of the flash contactless EPROM or EEPROM type. The array...
US-5,470,693 Method of forming patterned polyimide films
A method of producing patterned polyimide films using wet development of polyimide precursors through a photoresist mask is disclosed. Low thermal coefficient of...
US-5,468,955 Neutral beam apparatus for in-situ production of reactants and kinetic energy transfer
The discovery that a location exists in a plasma sheath surrounding a plasma near a plasma confining surface where recombination of ions and electrons is favored...
US-5,467,883 Active neural network control of wafer attributes in a plasma etch process
The present invention is predicated upon the fact that an emission trace from a plasma glow used in fabricating integrated circuits contains information about...
US-5,466,344 Method and apparatus for controlling water-based liquid waste
A pollution control apparatus (10) for controlling water-based liquid waste includes a vacuum distillation vessel (14) for separating water-based liquid waste...
US-5,465,279 Reactor coolant pump seal test decontamination housing
An arrangement of reactor coolant pump seals arranged in a generally annular stack with a plurality of stacking spacers in a test housing for emplacement in a...
US-5,465,151 Sensors employing interference of electromagnetic waves passing through waveguides having functionalized surfaces
Chemical and biosensors are disclosed. An optical waveguide is used to conduct electromagnetic radiation by total internal reflection in parallel through a...
US-5,464,850 Synergistic preservative systems for chemistry reagents
A family of solutions that can be used to calibrate one or more electrochemical sensors has been developed. These systems can be used to determine analytes in...
US-5,462,064 Integrated system for biological fluid constituent analysis
A multi-part system to collect and analyze constituents of body fluid. The use of a multilayered gel matrix to facilitate the collection of analytes fluid and a...
US-5,457,056 Halohydrocarbon sensing chemistry with base modifier
A base modifier is added to a pyridine/base reagent composition to improve the ability to detect halogenated hydrocarbons like TCE and chloroform. The base...
US-5,455,499 Method and apparatus for indicating a battery status
A battery-status-indicating apparatus and arrangement for use-with electronic equipment (100) provides an operator with a displayed indication of remaining...
US-5,455,009 Blood collection assembly including clot-accelerating plastic insert
A blood collection assembly includes a tube, which may be glass or plastic, and a plastic insert therein. The insert has been plasma-treated to change the...
US-5,451,543 Straight sidewall profile contact opening to underlying interconnect and method for making the same
A method for making a vertical profile contact opening (18) uses an etch stop layer (14), interposed between a conductor layer (10) and a dielectric layer (16),...
US-5,445,911 Chelating positive charge director for liquid electrographic toner
The invention is a positive charge director for liquid electrographic toners. The charge director comprises a very strongly chelating functional group covalently...
US-5,443,080 Integrated system for biological fluid constituent analysis
A multi-part system to collect and analyze constituents of body fluid. The use of a multilayered gel matrix to facilitate the collection of analytes fluid and a...
US-5,441,013 Method for growing continuous diamond films
In contrast to previous approaches, the present inventors have discovered that diamond films can be grown by carbon CVT reactions occurring exclusively in the...
US-5,437,953 Dye-polymer toners for electrophotography
This invention consolidates all of the functions served by the EP toner in one macromolecule. The invention is a macromolecule of dye-polymer comprising a dye...
US-RE35,006 Turfing systems for stadia
Stadia and other activity surfaces are provided comprising natural turf. Natural turf units are provided which are transportable between first and second...
US-5,436,380 Process for producing aromatic hydrocarbons
A process for producing aromatic hydrocarbons comprises bringing hydrocarbons having 2 to 12 carbon atoms into contact with a modified crystalline...
US-5,432,290 Process for the preparation of 2,2-difluoro-1,3-benzodioxole
A process for the preparation of 2,2-difluoro-1,3-benzodioxole from 2,2-dichlorol,3-benzodioxole. 2,2-Difluoro-1,3-benzodioxole is prepared by reaction of...
US-5,431,967 Selective laser sintering using nanocomposite materials
A method of fabricating three-dimensional objects in a layerwise fashion, and having high structural strength and high density, is disclosed. Methods are...
US-5,426,206 Stereospecific synthesis of aldols
Methods are provided for preparing all four diastereomers of 2-alkyl-3-hydroxyalkanals, 2-alkyl-3-silyloxyalkanals, and the like, with high enantiocontrol, using...
US-5,426,148 Fast-curling, high strength, two-part sealants using acetoacetate-amine cure chemistry
A fast-curing sealant composition is made from generally liquid oligomers and has good tensile strength, one hundred percent modulus, Shore-A Hardness, and good...
← Previous | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | Next →

File A Patent Application

  • Protect your idea -- Don't let someone else file first. Learn more.

  • 3 Easy Steps -- Complete Form, application Review, and File. See our process.

  • Attorney Review -- Have your application reviewed by a Patent Attorney. See what's included.