US3515696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters from hydroxyalkoxybenzoic acids,polyols and polycarboxylic acids
Assignee: Kuraray Co Ltd
•
Filing: 1964-08-07
•
Granted: 1970-06-02
•
Expires: 1984-08-07
Abstract
No abstract record available.
Inventors
- 👤 Takaakira Tsuji
- 👤 Kenichi Tanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/02; C08G63/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2471023A
Cited
US2683136A
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US2755273A
Cited
US2895946A
Cited
US3118935A
Cited
US3033822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |