US2676102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film
Assignee: Monsanto Chemicals Ltd
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Filing: 1950-09-15
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Granted: 1954-04-20
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Expires: 1970-09-15
Abstract
No abstract record available.
Inventors
- 👤 Boyd Thomas
- 👤 Robert E Cairns
- 👤 Bump Charles Kilbourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PHOTOGRAPHIC FILM COMPRISING A BACKING SHEET, A SHUBBING LAYER ON SAID BACKING SHEET AND A LIGHT SENSITIVE GELATIN EMULSION LAYER ON SAID SUBBING LAYER, SAID SUBBING LAYER CONSISTING ESSENTIALLY OF A FILM OF A CONDENSATION POLYMER TAKEN FROM THE GROUP CONSISTING OF CONDENSATION POLYMERS OF MONOMERIC TETRAGANO DERIVATIVES OF ORTHOTITANIC ACID AND COPOLYMERS THEREOF WITH MONOMERIC ORGANO SILANES, SAID CONDENSATION POLYMER HAVING BEEN PREPARED BY REACTING ONE MOL OF SAID MONOMER OR MONOMER MIXTURE WITH FROM 0.5 TO 1.5 MOLS OF WATER UNDER OTHERWISE ANHYDROUS CONDITIONS, SAID CONDENSATION POLYMER HAVING BEEN FORMED BY ADDING SAID WATER SLOWLY AND WITH CONSTANT AGITATION.
Claim 2
Dependent Claim
102 words
A PHOTOGRAPHIC FILM COMPRISING A BACKING SHEET, A SHUBBING LAYER ON SAID BACKING SHEET AND A LIGHT SENSITIVE GELATIN EMULSION LAYER ON SAID SUBBING LAYER, SAID SUBBING LAYER CONSISTING ESSENTIALLY OF A FILM OF A CONDENSATION POLYMER TAKEN FROM THE GROUP CONSISTING OF CONDENSATION POLYMERS OF MONOMERIC TETRAGANO DERIVATIVES OF ORTHOTITANIC ACID AND COPOLYMERS THEREOF WITH MONOMERIC ORGANO SILANES, SAID CONDENSATION POLYMER HAVING BEEN PREPARED BY REACTING ONE MOL OF SAID MONOMER OR MONOMER MIXTURE WITH FROM 0.5 TO 1.5 MOLS OF WATER UNDER OTHERWISE ANHYDROUS CONDITIONS, SAID CONDENSATION POLYMER HAVING BEEN FORMED BY ADDING SAID WATER SLOWLY AND WITH CONSTANT AGITATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |