US2932630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of bicyclo (2. 2. 1)-2-heptene
Assignee: EIDP Inc
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Filing: 1956-05-16
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Granted: 1960-04-12
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Expires: 1976-05-16
Abstract
No abstract record available.
Inventors
- 👤 Robinson Ivan Maxwell
- 👤 Rombach Louis Herman
- 👤 Truett William Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:01
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A NORMALLY SOLID POLY-3-CYCLOPENTANYLVINYLENE HAVING A CRYSTALLINE MELTING POINT AT 180* TO 205*C. AND HAVING AN INFRA RED SPECTRUM CHARACTERIZED BY A BAND AT 10.37 MICRONS HAVING AN OPTICAL DENSITY OF GREATER THAN 1.0 AND A BAND AT 11.25 MICRONS HAVING AN OPTICAL DENSITY OF LESS THAN 0.2, SAID POLY 3-CYCLOPENTANYLVINYLENE HAVING BEEN OBTAINED SOLELY THROUGH CHAIN SCISSION POLYMERIZATION OF BICYCLO-(2.2.1)-2-HEPTENE.
Claim 2
Dependent Claim
61 words
A NORMALLY SOLID POLY-3-CYCLOPENTANYLVINYLENE HAVING A CRYSTALLINE MELTING POINT AT 180* TO 205*C. AND HAVING AN INFRA RED SPECTRUM CHARACTERIZED BY A BAND AT 10.37 MICRONS HAVING AN OPTICAL DENSITY OF GREATER THAN 1.0 AND A BAND AT 11.25 MICRONS HAVING AN OPTICAL DENSITY OF LESS THAN 0.2, SAID POLY 3-CYCLOPENTANYLVINYLENE HAVING BEEN OBTAINED SOLELY THROUGH CHAIN SCISSION POLYMERIZATION OF BICYCLO-(2.2.1)-2-HEPTENE.
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |