Photographic paper support
Patent 4675245 Issued on June 23, 1987. Estimated Expiration Date: 
June 23, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 23, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2697040 Thermally-developable light-sensitive elements Photographic support Antithrombogenic articles White photographic paper support and method of producing same Photographic support Process for preparing polyolefin resin-coated paper for photographic use Patent #: 4447524 InventorAssigneeApplicationNo. 06/622207 filed on 06/19/1984US Classes:428/328, Heavy metal or aluminum or compound thereof427/411, Paper base427/415, Cellulosic coating428/330, Alkali metal or alkaline earth metal or compound thereof428/513, Monoethylenically unsaturated428/534, Cellulosic next to another cellulosic428/537.5, Of paper428/537.7, Next to layer of metal salt (e.g., plasterboard, etc.)430/536, Polymer of unsaturated monomer430/538Fibrous, e.g., paper, textile, etc.ExaminersPrimary: Ives, P. C.Attorney, Agent or FirmInternational ClassesG03C 1/79 (20060101)G03C 1/775 (20060101) D21H 17/24 (20060101) D21H 19/00 (20060101) D21H 19/84 (20060101) D21H 17/00 (20060101) D21H 17/16 (20060101) D21H 17/17 (20060101) Foreign Application Priority Data1983-08-06 DEAbstractA photographic paper support made of a water-repellent sized base paper coated on both sides with a waterproof synthetic resin, and wherein the paper contains a combination of sizing substances including a water-repellent sizing agent, a cationic strengthening retention and binding agent and a sulfate or phosphate ester of a polysaccharide. The water-repellent sizing agent relative to the paper fiber content is about 0.2 to 2% by weight, the cationic strengthening and binding agent is greater in amount than about 1.5 of the water-repellent sizing agent, and the amount of the esterified polysaccharide is about 0.1 to 10% by weight relative to the fiber content. |
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