US3198767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conjugated organic polymers
Assignee: Wyeth Holdings LLC
•
Filing: 1961-03-17
•
Granted: 1965-08-03
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
- 👤 Matsuda Ken
- 👤 Lucille T Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
C; C08; C08G; C08G73/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR PREPARATION OF LINEAR, CONJUGATED, ORGANIC POLYMERS WHICH CONSISTS ESSENTIALLY OF REACTIN (1) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) HYDRAZINE, (B) THOSE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
31 words
A PROCESS FOR PREPARATION OF LINEAR, CONJUGATED, ORGANIC POLYMERS WHICH CONSISTS ESSENTIALLY OF REACTIN (1) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) HYDRAZINE, (B) THOSE CORRESPONDING TO 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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |