US2848426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyerpoxy polyethers, their preparation and polymers
Assignee: Shell Development Co
•
Filing: 1956-12-03
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Granted: 1958-08-19
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Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Newey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:32
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A POLYEPOXIDE COMPRISING AN ETHER OF (1) A MONOHYDRIC ALCOHOL HAVING A
Claim 2
Dependent Claim
12 words
A POLYEPOXIDE COMPRISING AN ETHER OF (1) A MONOHYDRIC ALCOHOL HAVING A
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |