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-4,253,885 Treating nickel base alloys
A method of heat treating and coating a nickel base alloy containing chromium, titanium, aluminum, cobalt, molybdenum, tungsten, boron and carbon. The alloy is...
US-4,253,884 Treating nickel base alloys
A method of heat treating and coating a nickel base alloy containing chromium, titanium, aluminum, cobalt, molybdenum, tungsten, boron and carbon. The alloy is...
US-4,248,774 P-Sulphophenoxy-phenylazo indoles
Synthetic fibre materials, especially polyester fibres, are dyed in yellowish to orange-red shades with good fastness to light and washing if dyestuffs of the...
US-4,246,296 Controlling the properties of native films using selective growth chemistry
An improved technique for growing native films on compound semiconductors is disclosed. In this technique, additional preferential chemistry is used in...
US-4,244,757 Processing for cube-on-edge oriented silicon steel
A process for producing electromagnetic silicon steel having a cube-on-edge orientation. The process includes the steps of: preparing a melt of silicon steel...
US-4,243,417 Corrosion-inhibiting latex paints
The method of modifying latex paints for maintenance paint applications, primarily on iron or steel industrial and transportation structures, in order to provide...
US-4,243,416 Corrosion-inhibiting method using latex paints and article
The method of modifying latex paints for maintenance paint applications, primarily on iron or steel industrial and transportation structures, in order to provide...
US-4,242,329 Bradykinin-inhibiting tripeptide derivatives
Tripeptide derivatives of the formula in which X is selected from the group consisting of Pro and Phe Y is selected from the group consisting of O--R.sub.1 and NH--R.sub.2...
US-4,241,998 Spectrophotometer
Spectrophotometer intended in particular for the optical analysis of samples in a rotatory analyser. In order to attain the characteristics required of a modern...
US-4,236,894 Readout circuit in an automatic chemical testing apparatus
In an automatic chemical testing apparatus in which radiant energy readings are taken from a liquid sample of reacted contents comprising reagent and one or more...
US-4,233,464 Cyclohexene carotinoid intermediates
1-[3-Methyl-3,5,5-trialkoxy-pent-1-yn-1-yl]-2,6-dimethyl-cyclohex-1-enes, which may or may not be methyl-substituted in the 2- and/or 6-position, are obtained by...
US-4,231,748 Azo dyestuffs
Polyester fibres are dyed in yellow and orange-red color shades with good fastness to light and wet processing when dyestuffs of the formula ##STR1## ...
US-4,229,369 Tris (hydroxymethyl) aminomethane salt of 2-mercaptosuccinic acid
An improved reagent system for chemical determinations and novel compositions therefor provide improved reagent stability, particularly in a dry, storage stable...
US-4,227,818 Warning system for fluid mixing and dispensng system
A warning system for a fluid mixing system provides for automatically mixing precise concentrations of photographic processing chemistry to be used in an X-ray...
US-4,225,711 Substituted 2-[(methylsulfinyl)acetyl]-3-heterocyclicindoles and their use as immunosuppressants
This invention relates to compositions of matter classified in the art of chemistry as substituted 2-[(methylsulfinyl)acetyl]-3-heterocyclicindoles, various...
US-4,225,664 X-ray resist containing poly(2,3-dichloro-1-propyl acrylate) and poly(glycidyl methacrylate-co-ethyl acrylate)
A mixture of poly(2,3-dichloro-1-propyl acrylate) and poly(glycidyl methacrylate-co-ethyl acrylate), with the latter forming between 1 percent and 20 percent by...
US-4,225,569 Carbon-carbon composite material and method for its production
The present invention provides a carbon-carbon composite material consisting of a matrix carbon and a fibrous reinforcing carbon, said matrix carbon and fibrous...
US-4,220,780 Cationic dyestuffs
Cationic dyestuffs of the formula ##STR1## wherein A represents oxygen, sulphur or the groupings >N--R.sub.3, ##STR2## wherein R.sub.3 denotes an...
US-4,217,054 Fluid mixing and dispensing system
A fluid mixing system and method is disclosed for automatically mixing precise concentrations of photographic processing chemistry to be used in an X-ray film...
US-4,211,886 Manufacture of benzene, toluene and xylene
Benzene, toluene and xylene are produced in high yield from aromatic naphtha by a processing technique which combines (1) high temperature isomerization of eight...
US-4,208,638 HF or DF Chemical laser using laser induced chemistry
A chemical HF or DF laser is obtained by irradiating COF.sub.2 +H.sub.2 /ub.2 in admixture with the R.sub.12 line of a CO.sub.2 laser. The irradiation is...
US-4,208,241 Device fabrication by plasma etching
High density fine-line integrated structure fabrication is expedited by use of plasma etching systems which assure straight vertical walls (absence of ...
US-4,202,736 Process and apparatus for the thorough purification of water and the highly purified water obtained thereby
The water is heated to convert it into steam; the steam is passed from a container into a superheating zone and then condensed in the form of purified water. The...
US-4,202,104 HCl or DCl Chemical laser using laser induced chemistry
A chemical HCl or DCl laser is obtained by irradiating COCl.sub.2 +H.sub.2 D.sub.2 in admixture with the P.sub.54 line of a CO.sub.2 laser. The irradiation is...
US-4,198,382 Novel carbon-carbon composite material and method for its production
The present invention provides a carbon-carbon composite material consisting of a matrix carbon and a fibrous reinforcing carbon, said matrix carbon consisting...
US-4,195,923 System for producing photographs
A portable, self contained apparatus for exposing and developing photographic film, the apparatus including a camera, a processor unit, and a manually...
US-4,192,084 Atomic model
A teaching aid which has a display board and a number of discs having symbols printed thereon and magnets for attaching the discs to the display board. The...
US-4,189,536 Reagent systems, enzymatic assays and compositions therefor
An improved reagent system for chemical determinations and novel compositions therefor provide improved reagent stability, particularly in a dry, storage stable...
US-4,189,470 Method for the continuous removal of a specific antibody from the lymph fluid in animals and humans
A process for the removal of a specific antibody from the lymph fluid free of lymph cells is disclosed. The lymph is taken from a subject (e.g., human or animal)...
US-4,187,221 Process for preparing azetidinones
A process for preparing azetidinones of the formulae 1 and 2A and the stereoisomers of the latter of formula 2B ##STR1## wherein R is an amino-protecting...
US-4,185,156 Peptides and acid addition salts thereof
The compounds of this invention represented by the following formula: ##STR1## (wherein R is hydrogen atom, an alkyl group having C.sub.1 to C.sub.4, a ...
US-4,183,850 Process for preparing 2-acyloxymethylpenams and 3-acyloxycephams
A process for preparing 2-acyloxymethylpenams and 3-acyloxycephams of the formulae 1 and 2 ##STR1## in which R represents the aliphatic, aromatic, or...
US-4,182,574 Arrangement for carrying out laser spectral analysis
The invention concerns an arrangement for enabling laser spectral analysis of chemical components contained in a target material, by utilizing the respective...
US-4,178,103 Light scattering photometer and sample handling system therefor
A laser photometer including means forming an unsupported curtain of liquid sample, means for focusing a laser beam at a sample volume in the unsupported liquid...
US-4,176,024 Gas dynamic reaction process and system for laser chemistry
A reaction system is disclosed wherein a moving, unidirectional stream of an activatable gaseous species is produced, the individual members of which have the...
US-4,172,432 Oxygen sensor monitor apparatus
For use in association with a fuel mixture preparation system of an internal combustion engine which uses closed-loop control based on exhaust chemistry as...
US-4,172,078 Thiazolineazetidinone derivatives
Thiazolineazetidinone derivatives of the formulae 1,2, and 3. ##STR1## wherein R is derived from the commonly known carboxamido groups present in ...
US-4,171,233 Lens quality of die steel
A die steel having high hardenability, high hardness, good toughness and capable of achieving a high polished surface flatness in the air or oil quenched and...
US-4,166,736 Powdered metal filter composition and processes for producing the same
A powdered metal filter composition and processes for producing the same by water atomization in which the composition exhibits an apparent density, ...
US-4,163,811 Method of fabricating a fuel cell electrode
Electrocatalyst and hydrophobic polymer particles are combined to form an aqueous suspension which is then applied to a conductive substrate to form an...
US-4,153,005 Multiple electron beam vacuum vapor deposition apparatus
A vacuum vapor deposition apparatus having a plurality of electron beam sources spaced about the periphery of the molten alloy pool is provided. The electron...
US-4,151,503 Temperature compensated resistive exhaust gas sensor construction
A pair of ceramic chips, formed of similar metal oxide ceramic materials which are semiconductors at elevated temperature, are connected electrically in series...
US-4,150,127 Novel steroid compounds having an oxygen function in the 19-position
Novel 19-oxygenated steroids of the 20-spiroxane series of the formula ##STR1## in which R.sup.3 is a lower alkyl radical carrying an oxygen-containing ...
US-4,149,162 Battery discriminator circuit for smoke detectors
A battery powered smoke detector includes a battery powered discriminator circuit which periodically senses the chemistry of the battery represented by its...
US-4,146,449 Purification of silane via laser-induced chemistry
Impurities such as PH.sub.3, AsH.sub.3, and B.sub.2 H.sub.6 may be removed from SiH.sub.4 by means of selective photolysis with ultraviolet radiation of the...
US-4,145,343 6'-Amino-spiro[cycloalkane-1,2'-penam]-3'-carboxylic acid derivatives
6'-Amino-spiro[cycloalkane-1,2'-penam]-3'-carboxylic acid derivatives having the formula ##STR1## WHEREIN N IS A WHOLE NUMBER OF FROM 3 TO 6 AND R.sub.1 and...
US-4,144,151 Production of B.sub.10 H.sub.14 from B.sub.2 H.sub.6 at room temperature by laser induced chemistry using DF laser
A method for the production of B.sub.10 H.sub.14 by laser induced chemistry is disclosed. A DF laser is used to irradiate a laser reaction cell containing...
US-4,141,856 Reference material for establishing anion concentrations in analytical chemistry tests
A composition for reconstituting blood serum to provide a control standard used in the analysis of blood serum, said composition comprising a quaternary ammonium...
US-4,139,628 Amino-spiro[oxa(or thia)cycloalkane-penam]-carboxylic acid derivatives
Amino-spiro[oxa(or thia)cycloalkane-penam]-carboxylic acid derivatives having the formula ##STR1## WHEREIN X is a sulfur or oxygen atom or the sulfinyl...
US-4,134,785 Real-time analysis and control of melt-chemistry in crystal growing operations
To improve the control over resistivity of grown single crystalline ingots, to reduce the turn-around time between growth of successive ingots in a particular...
← 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 | 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.