US2830972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic polymers and their preparation
Assignee: EIDP Inc
•
Filing: 1954-03-09
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Granted: 1958-04-15
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Expires: 1974-03-09
Abstract
No abstract record available.
Inventors
- 👤 Shacklett Comer Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:56
CPC Classifications
B; B60; B60C; B60C19/00; B29; B29D; B29D30/00; B29D30/06; B29D30/38; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; B60C11/00; B60C11/0008; B60C2011/0016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COPOLYMER CONSISTING OF RECURRING INTRALINEAR UNITS OF THE FORMULA:
Claim 2
Dependent Claim
10 words
A COPOLYMER CONSISTING OF RECURRING INTRALINEAR UNITS OF THE FORMULA:
References Cited (Backward Citations)
CA495934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |