US3538033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxyalkylene derivatives of diepoxides
Assignee: Kao Corp
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Filing: 1967-08-11
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Granted: 1970-11-03
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Expires: 1987-08-11
Abstract
No abstract record available.
Inventors
- 👤 Noburo Hayashi
- 👤 Kyozaburo Tachibana
- 👤 Noboru Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:39
CPC Classifications
C; C08; C08L; C08L63/00; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/86; A61Q; A61Q19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |