US3061884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing polyvinyl alcohol films
Assignee: Kurashiki Rayon Co Ltd
•
Filing: 1959-08-12
•
Granted: 1962-11-06
•
Expires: 1979-08-12
Abstract
No abstract record available.
Inventors
- 👤 Hirano Katsnaki
- 👤 Takada Masaru
- 👤 Kawamura Saburo
- 👤 Suzumura Hideo
- 👤 Nagano Koichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:14
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; B; B29; B29C; B29C71/00; C09; C09J; C09J129/00; C09J129/02; C09J129/04; C08L2666/00; C08L2666/28; C08L2666/54; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979762A
Cited
US2206850A
Cited
US2323383A
Cited
US2610360A
Cited
US2698967A
Cited
US2745134A
Cited
US2767435A
Cited
US2893053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |