US3100808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of saturated isobutylene polymer
Assignee: Cosden Petroleum Corp
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Filing: 1961-08-18
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Granted: 1963-08-13
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Expires: 1981-08-18
Abstract
No abstract record available.
Inventors
- 👤 Robert H Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:16
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04; C10; C10M; C10M107/00; C10M107/02; C10M107/08; C10M143/00; C10M143/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/0265; C10N; C10N2030/00; C10N2030/62; C10N2040/00; C10N2040/06; C10N2060/00; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF PURIFYING A SUBSTANTIALLY SATURATED LIQUID POLYISOBUTYLENE POLYMER HAVING A BROMINE NUMBER BETWEEN ABOUT 2 AND 30, SAID POLYMER BEING UNSTABLE IN STORAGE AND TENDING TO DISCOLOR AND DEVELOP A PUNGENT ODOR, SAID POLYMER HAVING A MOLEXULAR WEIGHT IN THE RANGE OF ABOUT 400 TO ABOUT 20,000 AND AN SSU VISOCITY AT 210*C. ABOVE 200 TO CONVERT THE SAME TO WATER WHITE SUBSTANTIALLY ODORLESS LIQUID POLYMER, COMPRISING LIGHTLY HYDRO GENERATING THE POLYMER UNDER CATALYTIC HYDROGENATING CONDITIONS.
Claim 2
Independent Claim
78 words
A METHOD OF PURIFYING A SUBSTANTIALLY SATURATED LIQUID POLYISOBUTYLENE POLYMER HAVING A BROMINE NUMBER BETWEEN ABOUT 2 AND 30, SAID POLYMER BEING UNSTABLE IN STORAGE AND TENDING TO DISCOLOR AND DEVELOP A PUNGENT ODOR, SAID POLYMER HAVING A MOLEXULAR WEIGHT IN THE RANGE OF ABOUT 400 TO ABOUT 20,000 AND AN SSU VISOCITY AT 210*C. ABOVE 200 TO CONVERT THE SAME TO WATER WHITE SUBSTANTIALLY ODORLESS LIQUID POLYMER, COMPRISING LIGHTLY HYDRO GENERATING THE POLYMER UNDER CATALYTIC HYDROGENATING CONDITIONS.
References Cited (Backward Citations)
US2472494A
Cited
US2461959A
Cited
US2488145A
Cited
US2706211A
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US2775638A
Cited
US2964506A
Cited
US2957930A
Cited
US2918507A
Cited
US3003009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |