Patent US3481822A successfully refreshed from Google Patents.
US3481822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass reinforced epoxy anhydride polymers
Assignee: Monsanto Research Corp
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Filing: 1966-11-14
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Granted: 1969-12-02
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harry S Wilson
- 👤 David Gerald Glasgow
- 👤 Ival O Salyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:59
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/043; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; C08G63/42; C08K; C08K7/00; C08K7/02; C08K7/04; C08J2363/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T442/00; Y10T442/20; Y10T442/2213; Y10T442/2369; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A COMPOSITE STRUCTURE COMPRISING AN INORGANIC FIBROUS REINFORCING AGENT AND, AS A MATRIX THEREFORE, A POLYMER OBTAINED BY HEATING AT 100*C. TO 400*C. AN ALICYCLIC EPOXY ANHYDRIDE OF THE FORMULA
Claim 2
Dependent Claim
30 words
A COMPOSITE STRUCTURE COMPRISING AN INORGANIC FIBROUS REINFORCING AGENT AND, AS A MATRIX THEREFORE, A POLYMER OBTAINED BY HEATING AT 100*C. TO 400*C. AN ALICYCLIC EPOXY ANHYDRIDE OF THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |