US3043810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyamides from bis-(omega-aminoalkyl) phosphines and dicarboxylic acids
Assignee: Wyeth Holdings LLC
•
Filing: 1959-08-19
•
Granted: 1962-07-10
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Expires: 1979-08-19
Abstract
No abstract record available.
Inventors
- 👤 William G Deichert
- 👤 Joseph J Pellon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A LINEAR POLYAMIDE CONSISTING ESSENTIALLY OF THE RECURRING UNIT STRUCTURE REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
15 words
A LINEAR POLYAMIDE CONSISTING ESSENTIALLY OF THE RECURRING UNIT STRUCTURE REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
US2646420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |