US2957852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomers derived from hydrazine
Assignee: EIDP Inc
•
Filing: 1955-12-29
•
Granted: 1960-10-25
•
Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Peter E Frankenburg
- 👤 August H Frazer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/06; C08G12/08; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G69/00; C08G71/00; C08G73/00; C08G73/06; C08G73/08; C08L; C08L75/00; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01F6/00; D01F6/58; D01F6/70; Y; Y10; Y10S; Y10S264/00; Y10S264/77; Y10S273/00; Y10S273/08; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A SYNTHETIC COPOLYMER CONSISTING ESSENTIALLY OF A PLURALITY OF REPEATING INTRALINEAR STRUCTURAL UNITS REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
17 words
A SYNTHETIC COPOLYMER CONSISTING ESSENTIALLY OF A PLURALITY OF REPEATING INTRALINEAR STRUCTURAL UNITS REPRESENTED BY 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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |