US2829051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographically sensitive lenticular film
Assignee: BASF Schweiz AG
•
Filing: 1952-07-18
•
Granted: 1958-04-01
•
Expires: 1972-07-18
Abstract
No abstract record available.
Inventors
- 👤 Gretener Edgar
- 👤 Rossi Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/64; G03C9/00; Y; Y10; Y10S; Y10S430/00; Y10S430/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE PROCESS WHICH COMPRISES SAPONIFYING ONE SIDE OF A CELLULOSE ESTER FILM BASE WHICH CARRIES CYLINDRICAL LENTICULATIONS ON ITS OTHER SIDE, COATING THE SAPONIFIED SURFACE WITH A GELATINE LAYER, TANNING THE GELATINE LAYER,
Claim 2
Dependent Claim
33 words
THE PROCESS WHICH COMPRISES SAPONIFYING ONE SIDE OF A CELLULOSE ESTER FILM BASE WHICH CARRIES CYLINDRICAL LENTICULATIONS ON ITS OTHER SIDE, COATING THE SAPONIFIED SURFACE WITH A GELATINE LAYER, TANNING THE GELATINE LAYER,
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |