Patent US2854461A successfully refreshed from Google Patents.
US2854461A
Expired / Lapsed
US
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New polyepoxides, particularly diepoxides, and method of making same
Assignee: Baker Petrolite LLC
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Filing: 1954-03-09
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Granted: 1958-09-30
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Expires: 1974-03-09
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Shen Kwan-Ting
- 👤 Cheng Jen-Pu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:29
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/18; C08G59/20; C08G59/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A POLYEPOXIDE OF THE STRUCTURE
Claim 2
Dependent Claim
5 words
A POLYEPOXIDE OF THE STRUCTURE
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |