US3329660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped articles
Assignee: EIDP Inc
•
Filing: 1964-11-27
•
Granted: 1967-07-04
•
Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Pitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0078; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/731
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A POLYBUTADIENESULFONE CONSISTING ESSENTIALLY OF A PLURALITY OF REPEATING UNITS HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
14 words
A POLYBUTADIENESULFONE CONSISTING ESSENTIALLY OF A PLURALITY OF REPEATING UNITS HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2469847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |