Patents by Inventor M. Akram Sandhu
M. Akram Sandhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 4601966Abstract: An electrographic, dry two-component developer composition is disclosed comprising triboelectrically charged carrier particles and oppositely charged toner particles. The toner particles contain, as a binder, an amorphous, random polyester-amide containing amide linkages in the polymer backbone and is derived from certain dicarboxylic acids, compounds containing primary amino groups and compounds containing hydroxyl groups. A process for using the developer composition to form toner image copies of an original is also disclosed.Type: GrantFiled: January 2, 1985Date of Patent: July 22, 1986Assignee: Eastman Kodak CompanyInventors: Hans R. Grashof, Hsin-Chia Kan, M. Akram Sandhu, John F. Wright, Paul D. Yacobucci
-
Patent number: 4595584Abstract: Disclosed is a composition adapted for use in coating pellets orally administrable to ruminants which protects the core material in the rumen and releases it in the abomasum comprising a film-forming polymeric material, a hydrophobic material dispersed in said polymeric material, and a physiologically acceptable flake material dispersed in said polymeric material, the flake material having been treated by bringing the particles into rubbing contact with the hydrophobic material so that the surface of the particles of flake material become hydrophobic.Type: GrantFiled: January 7, 1985Date of Patent: June 17, 1986Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, M. Akram Sandhu
-
Patent number: 4473620Abstract: Disclosed are free flowing, solid, antioxidant particles comprising butylated hydroxyanisole encapsulated within an edible polymeric coating. The coating is adapted to release the butylated hydroxyanisole when the particles are in contact with vegetable oil or molten fat. The process for preparing these antioxidant particles includes establishing a molten butylated hydroxyanisole as droplets in a liquid dispersion containing a dissolved film forming edible polymer. The liquid dispersion is cooled below the melting temperature of the butylated hydroxyanisole droplets thereby causing the dissolved polymer to form an encapsulated film around the solidified droplets and surface drying the solidified droplets.Type: GrantFiled: December 23, 1982Date of Patent: September 25, 1984Assignee: Eastman Kodak CompanyInventors: Stephen H. W. Wu, M. Akram Sandhu, Charles H. Benton
-
Patent number: 4446302Abstract: Polyesters having recurring units derived from diols and diacids and recurring units derived from p-hydroxybenzoic acid is disclosed. Electrographic developer compositions comprising toner particles containing the polyesters are also disclosed.Type: GrantFiled: July 25, 1983Date of Patent: May 1, 1984Assignee: Eastman Kodak CompanyInventors: M. Akram Sandhu, John F. Wright, Michel F. Molaire
-
Patent number: 4416965Abstract: Polyesters having recurring units derived from diols and diacids and recurring units derived from p-hydroxybenzoic acid is disclosed. Electrographic developer compositions comprising toner particles containing the polyesters are also disclosed.Type: GrantFiled: July 14, 1982Date of Patent: November 22, 1983Assignee: Eastman Kodak CompanyInventors: M. Akram Sandhu, John F. Wright, Michel F. Molaire
-
Patent number: 4383018Abstract: A color imaging device which comprises an adhesive layer between (a) means for sensing radiation comprising a planar array of charge-handling semiconductive photosensors, and (b) superimposed filter means for controlling access of radiation to the sensing means comprising a transparent polymer layer capable of receiving dyes such as heat transferable dyes; the adhesive layer comprising a polyester selected from the group consisting of (1) polyesters having recurring carboxylate units of which at least 80 mole percent are terephthalate units, and recurring alkylene units derived from glycols of which at least 40 mole percent are ether alkylene units, with the proviso that either (a) the recurring alkylene units comprise at least 60 mole percent ether alkylene units or (b) either the recurring carboxylate units comprise at least 2 mole percent pyromellitic tetracarboxylate units or at least 10 mole percent of linear aliphatic dicarboxylate units having at least 8 carbon atoms, and that when at least 10 mole perType: GrantFiled: December 12, 1980Date of Patent: May 10, 1983Assignee: Eastman Kodak CompanyInventors: Thomas W. Martin, M. Akram Sandhu
-
Patent number: 4266017Abstract: A color imaging device which comprises an adhesive layer between (a) means for sensing radiation comprising a planar array of charge-handling semiconductive photosensors, and (b) superimposed filter means for controlling access of radiation to the sensing means comprising a transparent polymer layer capable of receiving dyes such as heat transferable dyes; the adhesive layer comprising a polyester selected from the group consisting of (1) polyesters having recurring carboxylate units of which at least 80 mole percent are terephthalate units, and recurring alkylene units derived from glycols of which at least 40 mole percent are ether alkylene units, with the proviso that either (a) the recurring alkylene units comprise at least 60 mole percent ether alkylene units or (b) either the recurring carboxylate units comprise at least 2 mole percent pyromellitic tetracarboxylate units or at least 10 mole percent of linear aliphatic dicarboxylate units having at least 8 carbon atoms, and that when at least 10 mole perType: GrantFiled: September 4, 1979Date of Patent: May 5, 1981Assignee: Eastman Kodak CompanyInventors: Thomas W. Martin, M. Akram Sandhu
-
Patent number: 4259422Abstract: A transparency that is used to project an image onto a viewing surface such as a screen is prepared by an electrographic copying process. An element used in this process comprises a transparent support that is coated with an image-receiving hydrophilic colloid layer that receives an image pattern of fusible toner particles. The image pattern of toner particles is fused to the hydrophilic colloid layer by contacting the toned image-bearing layer with a heated fuser surface such as a fuser roll. The fuser surface is coated with a release liquid which inhibits offsetting of the toner particles onto the fuser surface.Transparencies prepared by this process exhibit good resistance to abrasion in toned areas while also displaying substantially no release liquid in non-toned areas upon projection viewing. Furthermore, toned areas of such transparencies can be selectively removed by light rubbing with a moist cloth or tissue.Type: GrantFiled: November 13, 1978Date of Patent: March 31, 1981Assignee: Eastman Kodak CompanyInventors: Bruce W. Davidson, Frederick A. Pomeroy, M. Akram Sandhu
-
Patent number: 4196009Abstract: A color imaging device which comprises an adhesive layer between (a) means for sensing radiation comprising a planar array of charge-handling semiconductive photosensors, and (b) superimposed filter means for controlling access of radiation to the sensing means comprising a transparent polymer layer capable of receiving dyes such as heat transferable dyes; the adhesive layer comprising a polyester selected from the group consisting of (1) polyesters having recurring carboxylate units of which at least 80 mole percent are terephthalate units, and recurring alkylene units derived from glycols of which at least 40 mole percent are ether alkylene units, with the proviso that either (a) the recurring alkylene units comprise at least 60 mole percent ether alkylene units or (b) either the recurring carboxylate units comprise at least 2 mole percent pyromellitic tetracarboxylate units or at least 10 mole percent of linear aliphatic dicarboxylate units having at least 8 carbon atoms, and that when at least 10 mole perType: GrantFiled: March 8, 1978Date of Patent: April 1, 1980Assignee: Eastman Kodak CompanyInventors: Thomas W. Martin, M. Akram Sandhu
-
Patent number: 4140644Abstract: An electrographic toner composition comprises a polyester resin that is the condensation product of from about 30 to about 100 mole percent 2,2-dimethyl-1,3-propanediol, from 0 to about 70 mole percent 2,2'-oxydiethanol and terephthalic acid or any ester forming derivative thereof, the polyester resin having an inherent viscosity of at least about 0.30.Type: GrantFiled: August 3, 1977Date of Patent: February 20, 1979Assignee: Eastman Kodak CompanyInventors: M. Akram Sandhu, John F. Wright
-
Patent number: 4132833Abstract: A dye receiving element comprises diffusing heat transferable dyes into a transparent layer containing an amorphous, solvent soluble, aromatic polyester having at least 30 mole percent of its recurring units comprised of the condensation residue of a diol and a dicarboxylic acid, the residue containing a saturated gem-bivalent radical having a saturated polycyclic three-dimensional structure that includes a saturated bicyclic atomic bridged hydrocarbon ring member, the gem-bivalent radical linking two aromatic groups.Type: GrantFiled: October 17, 1977Date of Patent: January 2, 1979Assignee: Eastman Kodak CompanyInventor: M. Akram Sandhu
-
Patent number: 4097230Abstract: An improved method for transferring heat transferable dyes comprises diffusing the dyes into a dye receiving element comprising a transparent layer containing an amorphous, solvent-soluble, aromatic polyester having at least 30 mole percent of its recurring units comprised of the condensation residue of a diol and a dicarboxylic acid, the residue containing a saturated gem-bivalent radical having a saturated polycyclic three-dimensional structure that includes a saturated bicyclic atomic bridged hydrocarbon ring member, the gem-bivalent radical linking two aromatic groups.Type: GrantFiled: October 8, 1976Date of Patent: June 27, 1978Assignee: Eastman Kodak CompanyInventor: M. Akram Sandhu
-
Patent number: RE32136Abstract: Polyesters having recurring units derived from diols and diacids and recurring units derived from p-hydroxybenzoic acid is disclosed. Electrographic developer compositions comprising toner particles containing the polyesters are also disclosed.Type: GrantFiled: February 11, 1985Date of Patent: May 6, 1986Assignee: Eastman Kodak CompanyInventors: M. Akram Sandhu, John F. Wright, Michel F. Molaire