US3738838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sublayer for photographic polyester film base
Assignee: Konica Minolta Inc
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Filing: 1968-09-10
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Granted: 1973-06-12
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Expires: 1988-09-10
Abstract
Abstract A SUBLAYER FOR A PHOTOGRAPHIC POLYESTER FILM BASE, WHICH COMPRISES A HOMOPOLYMER OF A MONOMER OF THE GENERAL FORMULA CH2=C(-R1)-COO-R2 IN WHICH R1 STANDS FOR HYDROGEN, METHYL OR CHLORINE, AND R2 FOR A CHLORINATED ALKYL, OR METHYL OR ETHYL, WHEN R1 IS CHLORINE, OR A COPOLYMER OF THE MONOMER WITH OTHER POLYMERIZABLE ETHYLENICALLY UNSATURATED COMPOUND.
Inventors
- 👤 Y Ando
- 👤 M Kogure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |