US2979477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising a vinylpyridine polymer and a hydantoin formaldehyde condensation polymer
Assignee: Polaroid Corp
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Filing: 1958-05-08
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Granted: 1961-04-11
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:25
CPC Classifications
C; C08; C08L; C08L39/00; C08L39/04; C08L39/08; C08L61/00; C08L61/20; C08L61/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AS A NEW COMPOSITION OF MATTER, A MIXTURE OF A VINYLPYRIDINE POLYMER AND A HYDANTOIN FORMALDEHYDE CONDENSATION POLYMER.
Claim 2
Dependent Claim
18 words
AS A NEW COMPOSITION OF MATTER, A MIXTURE OF A VINYLPYRIDINE POLYMER AND A HYDANTOIN FORMALDEHYDE CONDENSATION POLYMER.
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |