US2817644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing polyepoxides and resulting products
Assignee: Shell Development Co
•
Filing: 1955-12-30
•
Granted: 1957-12-24
•
Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edward C Shokal
- 👤 Herbert A Newey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:54
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/504; C08G59/5026; C08G59/62; C08G59/621; C08G59/623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A PROCESS FOR PRODUCING A RESINIFED PRODUCT WHICH COMPRISES MIXING AND REACTING AT A TEMPERATURE BETWEEN 50*C. AND 280*C. A POLYEPOXIDE HAVING A
Claim 2
Dependent Claim
23 words
A PROCESS FOR PRODUCING A RESINIFED PRODUCT WHICH COMPRISES MIXING AND REACTING AT A TEMPERATURE BETWEEN 50*C. AND 280*C. A POLYEPOXIDE HAVING A
References Cited (Backward Citations)
US2717885A
Cited
US2709664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |