Patent US2652372A successfully refreshed from Google Patents.
US2652372A
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Catalytic hydrogenation of carbon monoxide to orientable, essentially hydrocarbon polymers
Assignee: EIDP Inc
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Filing: 1951-07-10
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Granted: 1953-09-15
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Expires: 1971-07-10
Abstract
No abstract record available.
Inventors
- 👤 Mark W Farlow
- 👤 Elbert C Herrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:08
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN ESSENTIALLY HYDROCARBON POLYMER ORIENTABLE BY COLD-DRAWING WHICH IS THE REACTION PRODUCT OF CARBON MONOXIDE AND HYDROGEN, SAID HYDROCARBON POLYMER MELTING ABOVE 130* C., HAVING AN INHERENT VISCOSITY OF AT LEAST 1.1, MEASURED AT 0.1% CONCENTRATION IN TETRAHYDRONAPHTHALENE AT 125* C., AND BEING CAPABLE OF FORMING TOUGH FILMS HAVING A DENSITY OF AT LEAST 0.97, BASED ON THE ANNEALED FILM AND HAVING A STIFFNESS MODULUS GREATER THAN 150,000 LB./SQ. IN., AND A MICROTENSILE BREAKING STRENGTH OF AT LEAST 100,000 LB/SQ. IN., BASED ON THE RELAXED, DRAWN DIMENSION OF A FILM OF SAID POLYMER.
Claim 2
Dependent Claim
93 words
AN ESSENTIALLY HYDROCARBON POLYMER ORIENTABLE BY COLD-DRAWING WHICH IS THE REACTION PRODUCT OF CARBON MONOXIDE AND HYDROGEN, SAID HYDROCARBON POLYMER MELTING ABOVE 130* C., HAVING AN INHERENT VISCOSITY OF AT LEAST 1.1, MEASURED AT 0.1% CONCENTRATION IN TETRAHYDRONAPHTHALENE AT 125* C., AND BEING CAPABLE OF FORMING TOUGH FILMS HAVING A DENSITY OF AT LEAST 0.97, BASED ON THE ANNEALED FILM AND HAVING A STIFFNESS MODULUS GREATER THAN 150,000 LB./SQ. IN., AND A MICROTENSILE BREAKING STRENGTH OF AT LEAST 100,000 LB/SQ. IN., BASED ON THE RELAXED, DRAWN DIMENSION OF A FILM OF SAID POLYMER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |