Patent US1596739A successfully refreshed from Google Patents.
Patent US2768153A successfully refreshed from Google Patents.
US2768153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing polyepoxides and resulting products
Assignee: Shell Development Co
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Filing: 1955-02-24
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Granted: 1956-10-23
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Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Edward C Shokal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A PROCESS FOR PRODUCING A RESINIFIED PRODUCT WHICH COMPRISES MIXING AND REACTING A POLYEPOXIDE HAVING A
Claim 2
Dependent Claim
16 words
A PROCESS FOR PRODUCING A RESINIFIED PRODUCT WHICH COMPRISES MIXING AND REACTING A POLYEPOXIDE HAVING A
References Cited (Backward Citations)
US2324483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |