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: photography





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




Patent # Description
US-4,214,814 Variable soft focus lens system
A variable soft focus lens system particularly adapted for photography is disclosed. The lens system incorporates two lens groups, a first object side lens group...
US-4,211,562 Photographic compositions with silver halide solvents containing thioether groups
Difunctional compounds wherein one of said functions is a hard or soft atom that ionizes to the corresponding anion in alkaline solution to combine with silver...
US-4,211,559 Photographic processes and compositions employing thioether containing silver halide solvents
Difunctional compounds wherein one of said functions is a hard or soft atom that ionizes to the corresponding anion in alkaline solution to combine with silver...
US-4,210,387 Focus device for zoom lens
A focus device for a zoom lens having a mounting barrel focus member and a variator member. A stopper defines a short distance limit stop position. The stopper...
US-4,209,328 Dye image forming process
In a dye image forming process in color photography comprising imagewise exposing a photographic element comprising a support and a light sensitive silver halide...
US-4,209,244 Light responsive camera actuation control
In camera control circuitry including an exposure control circuit for controlling exposure factor or exposure factors, e.g. exposure time and/or diaphragm...
US-4,208,339 Process for the preparation of para-benzoquinone
p-Benzoquinone is prepared by oxidizing phenol with molecular oxygen or with a gas in which oxygen is present, in the liquid phase, in the presence of cuprous or...
US-4,208,115 Viewfinder system with focusing screen
A focusing screen of a viewfinder system for a photographic camera is designed as a liquid crystal cell having two transparent bodies which lie opposite one...
US-4,208,102 Enlargement lens mount
An enlargement system has a light guide mounted inside the lens mount to reflect light from inside the enlarger on to a stop-value scale. A light shut-off ring...
US-4,206,997 Method and device for making combined images for photography
An image combining apparatus for use in photography. The apparatus is in the form of a rectangular box having three open vertical side walls. A removable one-way...
US-4,206,972 High resolving objective covering a wide spectral r nge
The invention concerns a high-resolving objective particularly for use in aerial photography based on the double-gauss objective type, covering a wide spectral...
US-4,201,584 Silver halide elements containing yellow forming color couplers for silver halide photography
Novel color forming couplers for use in silver halide color photography are described. These couplers upon oxidative coupling with an aromatic primary amino...
US-4,200,902 Photography light
A camera-mounted illuminating device particularly useful for motion picture photography to provide relatively constant lighting of close-up scenes in motion...
US-4,200,370 Camera for daylight and flash photography
An automatic exposure control system for cameras of flash photographic capabilities which is switched to either of the daylight or the mode depending upon...
US-4,199,759 System for correlating electronic distance measurement and aerial photography for the extension of geodetic control
A system for correlating electronic distance measurement and aerial photography where an airborne electronic location station is photographed as it passes over...
US-4,196,001 Antistatic layer for photographic elements
Photographic elements are protected against the adverse effects resulting from accumulation of static electrical charges by incorporating in the element an...
US-4,194,824 Camera equipped with automatic unwinding device
A device for decoupling the film transport mechanism in a camera is operable either independently, for performing multiple-exposure photography, or by an...
US-4,194,818 Electronic flash unit for fill-flash photography
A quenchable electronic flash for use with a camera having an M-contact flash synchronization device, includes a flashtube for producing light, a ...
US-4,193,667 Zoom lens system capable of constant magnification photography
A constant magnification zoom lens system is provided that has the capability of permitting a predetermined desired constant magnification of an image during a...
US-4,191,461 Camera jig for underwater stereoscopic photography
A portable camera jig for use by divers in making close-up, stereoscopic tographs of underwater surfaces with a single lens camera includes, in combination with...
US-4,191,460 Camera with automatic focus adjustment device
A camera having a zoom lens with a focusing range changeover device for selectively permitting photography in either one of the ordinary zoom and macro-zoom...
US-4,187,225 Novel synthesis of bis pyrazolone oxonol dyes
In one embodiment, this application is directed to an improved method of synthesizing certain bis-pyrazolone oxonol compounds useful as antihalation dyes in...
US-4,187,017 Motor drive device in a camera
In a motor drive device capable of being coupled to a camera having an automatic exposure control circuit for determining the aperture value and/or the shutter...
US-4,186,305 High-temperature microscope
The present invention relates to a high-temperature microscope. According to this invention, a specimen is held in vacuum with one side of it heated through...
US-4,184,872 Additive system of color photography based on iridescent pigments
An inorganic system of color photography in which colored images are recorded with compositions comprising a mixture of an iridescent pigment of the type...
US-4,184,759 Photographic apparatus
A photographic apparatus of the foldable type in which, when in preparation for photography, a front housing carrying a photographic objective lens system...
US-4,182,918 Process for the preparation of polyhydric phenols
A process has been invented for the preparation of dihydric substituted phenols which comprises reacting a solution, which is essentially anhydrous and free from...
US-4,182,917 Process for the preparation of polyhydric phenols
A process has been invented for the preparation of pyrocatechol and hydroquinone which comprises reacting a solution which is substantially anhydrous and free...
US-4,182,573 Exposure meter
An exposure meter for use in photography which includes means for measuring brightness at a plurality of places in a scene to be measured for exposure, means for...
US-4,182,557 Single lens reflex camera capable of high speed continuous photography
A single lens reflex camera capable of the high speed continuous photographing. It achieves high speed continuous photography by means of an automatic winding up...
US-4,181,297 Positioning device for human limbs and the like
A positioning device for holding a human limb in a fixed position on a table for examination and/or X-ray photography. The device secures the limb against...
US-4,179,290 Photoelectrophoretic photography process involving dual corona treatments of opposite polarity
A photoelectrophoretic image-forming process utilizing a pair of electrodes with at least one of the electrodes being transparent and at least one of the...
US-4,178,447 Novel synthesis of 3,3-substituted dihydrobenzisothiazole-1,1-dioxides and...
This invention relates to a method of synthesizing certain 3-(carbocyclic aryl)-3-(4'-OP-carbocyclic aryl)-2,3-dihydrobenz[d]isothiazole-1,1-dioxides (and ...
US-4,178,181 Interference film photography
This invention concerns improvements in interference film photography.
US-4,178,090 3-Dimensional camera device
This invention relates to a reflex camera device having a single lens for the photography of right and left images from an object space transmitted as first and...
US-4,175,829 3-Dimensional camera device
This invention relates to a reflex camera device having a single lens for the photography of right and left images from an object space transmitted as first and...
US-4,174,162 Aerial camera mounting means
An improved apparatus is disclosed for adjustably mounting an aerial photaphy camera externally of an aircraft, including a support adapted for attachment to...
US-4,169,666 Foreground stabilization system for use in composite photography
In a composite photography system of the type wherein a foreground camera photographs life-size actors and objects while a background camera photographs scenery...
US-4,168,891 Camera for daylight and flash photography
A camera having an electronic flash unit either incorporated therein or removably attached thereto is provided with a flash mode selector and a flash energy...
US-4,168,338 Transfer sheet with toner-receiving layer of thermoplastic and thermosetting polymers
A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or...
US-4,166,681 Camera incorporating an electronic flash device
A camera incorporating an electronic flash device includes a flash emitting portion which is urged by a spring toward a projecting position and is normally...
US-4,164,370 Shutter device in a camera
A shutter device in a camera which effects photography with shutter curtains maintained open for a predetermined time comprises a rotatable member for normal...
US-4,163,256 Electronic photography system
A completely electronic system for recording and subsequently displaying still life pictures includes an optical-electronic transducer for generating electronic...
US-4,162,838 Camera viewfinder
Photographers frequently want to obtain pictures of unposed subjects or pictures taken from an unusual angle. The concept presented in this application is an...
US-4,162,776 Aerial photography camera mount assembly for a helicopter
An assembly for mounting, supporting, and releasably holding an angularly adjustable aerial photography camera that is to be used to take aerial reconnaissance...
US-4,158,155 Ignition circuit for extinguishing tubes in electronic flash equipment
An ignition circuit is provided for extinguishing tubes in electronic flash equipment for photography. The second winding of an ignition transformer is arranged...
US-4,156,034 Liquid developer for electro photography
A liquid developer for electro photography which comprises a coloring agent, a coating agent, a resistivity controlling agent and a carrier liquid which...
US-4,153,356 Light source apparatus for endoscope
A light source apparatus for endoscopes is provided which automatically controls an illuminating source used in an endoscope for photography. The apparatus...
US-4,150,882 Identification code generator for high speed motion picture photography
A method and apparatus for generating a variable pulse width code of at lt three binary coded decimal digits at a rate sufficiently greater than the film speed...
US-4,150,306 Blocking converter for flash equipment
A blocking converter is provided having a switching transistor controlled via a triggered monoflop with a defined on-time RC circuit which insures that the same...
← 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 | 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.