Patent US3369055A successfully refreshed from Google Patents.
US3369055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrogenous copolymers
Assignee: Monsanto Research Corp
•
Filing: 1965-12-06
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Granted: 1968-02-13
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Ival O Salyer
- 👤 Glasgow David Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:10
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
THE SOLID POLYMERIC PRODUCT OBTAINED BY HEATING A MIXTURE CONSISTING ESSENTIALLY OF (I) A BIS-IMIDE OF THE FORMULA
Claim 2
Dependent Claim
18 words
THE SOLID POLYMERIC PRODUCT OBTAINED BY HEATING A MIXTURE CONSISTING ESSENTIALLY OF (I) A BIS-IMIDE OF THE FORMULA
References Cited (Backward Citations)
US2935488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |