Patent US3205199A successfully refreshed from Google Patents.
US3205199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers from bis-phenolamides
Assignee: Monsanto Co
•
Filing: 1961-12-28
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Granted: 1965-09-07
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Preston Jack
- 👤 William A H Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:26
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
NEW SYNTHETIC LINEAR CONDENSATION POLYMERS CONSISTING ESSENTIALLY OF RECURRING STRUCTURAL UNITS OF THE FORMULA
Claim 2
Dependent Claim
14 words
NEW SYNTHETIC LINEAR CONDENSATION POLYMERS CONSISTING ESSENTIALLY OF RECURRING STRUCTURAL UNITS OF THE FORMULA
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |