US3676175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper coated with pigmented resin and optical brightening agent
Assignee: Arjo Wiggins Ltd
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Filing: 1970-06-17
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Granted: 1972-07-11
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Expires: 1990-06-17
Abstract
Abstract A SYNTHETIC RESIN COMPOSITION WHICH CONTAINS ANTIMONY TRIOXIDE AND AN OPTICAL BRIGHTENING AGENT FOR THE PRODUCTION OF PHOTOGRAPH SUPPORT MATERIALS. THE COMPOSITION IS USED IN SHEET FORM OR COATED ON TO A BASE OF PAPER OR BOARD. THE SYNTHETIC RESIN COMPOSITION SURFACE CAN BE SENSITIZED WITH A PHOTOGRAPH EMULSION OR COATED WITH SILVER PRECIPITATION NUCLEI.
Inventors
- 👤 Anthony Ian Woodward
- 👤 Angus John Challis Purdie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:59
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C1/79; G03C1/825; G03C8/00; G03C8/24; G03C8/26; G03C8/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |