1
Howard G Rogers, Ruth C Bilofsky, Russell Gaudiana, Ronald A Sahatjian: Optical device including birefringent polymer. Polaroid Corporation, Louis G Xiarhos, May 1, 1984: US04446305 (184 worldwide citation)

Optical devices including a molecularly oriented highly birefringent polymer are disclosed. The devices include molecularly oriented polymers comprising recurring units which exhibit a distribution of high electron density about the long axes of the polymer and the recurring units thereof. Transpare ...


2
Howard G Rogers, Ruth C Bilofsky, Russell A Gaudiana, Ronald A Sahatjian: Optical device including birefringent polymer. Polaroid Corporation, Louis G Xiarhos, June 25, 1985: US04525413 (143 worldwide citation)

Optical devices including a molecularly oriented highly birefringent polymer are disclosed. The devices include molecularly oriented polymers comprising recurring units which exhibit a distribution of high electron density about the long axes of the polymer and the recurring units thereof. Transpare ...


3
Howard G Rogers, Ruth C Bilofsky, Russell A Gaudiana, Ronald A Sahatjian: Optical device including birefringent aromatic amino carboxylic acid polymer. Polaroid Corporation, Louis G Xiarhos, May 28, 1985: US04520189 (119 worldwide citation)

Optical devices including a molecularly oriented highly birefringent polymer are disclosed. The devices include molecularly oriented polymers comprising recurring units which exhibit a distribution of high electron density about the long axes of the polymer and the recurring units thereof. Transpare ...


4
Howard G Rogers, Ruth C Bilofsky, Russell A Gaudiana, Ronald A Sahatjian: Optical device including birefringent polyhydrazide polymer. Polaroid Corporation, Louis G Xiarhos, June 4, 1985: US04521588 (103 worldwide citation)

Optical devices including a molecularly oriented highly birefringent polymer are disclosed. The devices include molecularly oriented polymers comprising recurring units which exhibit a distribution of high electron density about the long axes of the polymer and the recurring units thereof. Transpare ...


5
John W Ford Jr, Howard G Rogers, Christy P Thomas: Variable focus lens system employing elastomeric lens. Polaroid Corporation, Francis J Caufield, April 24, 1984: US04444471 (79 worldwide citation)

A variable focus lens system comprising an elastomeric, integrally molded, optical member and mounting arrangements therefor by which the axial position and the shape of a central lens part of the optical member can be changed in correspondence with one another to provide the lens system with focusi ...


6
Howard G Rogers: Variable focus elastomeric lens system. Polaroid Corporation, Francis J Caufield, April 30, 1985: US04514048 (46 worldwide citation)

A variable focus lens system comprising an elastomeric lens structured to undergo shape changes and corresponding focal length changes in a continuous manner over a predetermined range in response to variations in a tensile stress uniformly distributed around the peripheral edges of the lens element ...


7
Ronald F W Cieciuch, Roberta R Luhowy, Frank A Meneghini, Howard G Rogers: Dye substituted cyclic 1,3-sulfur-nitrogen compounds as dye image-forming materials in photography. Polaroid Corporation, Sybil A Campbell, July 4, 1978: US04098783 (40 worldwide citation)

This invention relates to color providing compounds useful as dye image-forming materials in color photographic processes. These compounds comprise a complete dye, i.e., a dye radical comprising the chromophoric system of a dye, such as, an azo, anthraquinone, azomethine or phthalocyanine dye and a ...


8
Howard G Rogers: Foldable tripod. Polaroid Corporation, Karl Hormann, February 3, 1987: US04640482 (31 worldwide citation)

A folding tripod the legs of which are moveable into operative positions where they can be arrested to impart stability and firmness to the tripod, by clamping them against peripheral surfaces of brackets protruding from a center post of the tripod. Each bracket is provided with a bearing acting as ...


9
Howard G Rogers, Russell A Gaudiana, Jeannette S Manello, Ronald A Sahatjian: Polyamide comprising substituted biphenylene or substituted stilbene radicals. Polaroid Corporation, Louis G Xiarhos, May 17, 1983: US04384107 (30 worldwide citation)

A class of polyamides comprising recurring units having certain substituted-biphenylene or substituted-stilbene radicals is disclosed. The substituted radicals include substituents so as to confer a non-coplanar molecular configuration and a substantially cylindrical distribution of electron density ...


10
Howard G Rogers, Russell A Gaudiana, Jeannette S Manello, Ronald A Sahatjian: Substituted birefringent polyamide. Polaroid Corporation, Louis G Xiarhos, July 24, 1984: US04461886 (26 worldwide citation)

A class of polyamides comprising recurring units having certain substituted-biphenylene or substituted-stilbene radicals is disclosed. The substituted radicals include substituents so as to confer a non-coplanar molecular configuration and a substantially cylindrical distribution of electron density ...