Patent US3285869A successfully refreshed from Google Patents.
US3285869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsions and latices of cis 1, 4-polyisoprene
Assignee: Shell USA Inc
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Filing: 1962-03-05
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Granted: 1966-11-15
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Geza S Ronay
- 👤 Jr Webster M Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:15
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08J2309/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
COMPOSITION COMPRISING OIL-IN WATER EMULSION OF SYNTHETIC, SUBSTANTIALLY GEL-FREE CIS 1,4-POLYISOPRENE, AN INERT HYDROCARBON SOLVENT, AN EMULSIFYING AGENT, AND WATER, THE SAID POLYISOPRENE BEING WHOLLY SOLUBLE IN THE SAID HYDROCARBON AND HAVING AN INTRINSIC VISCOSITY RANGING FROM 1.0 TO 13.0 MEADURED IN TOLUENE AT 25*C., AND BEING PRESENT IN AN AMOUNT BETWEEN 5% AND 15% BY WEIGHT OF THE INSERT HYDROCARBON SOLVENT HAVING UP TO EIGHT CARBON ATOMS, THE EMULSIFYING AGENT BEING PRESENT IN AN AMOUNT IN EXCESS OF 0.25% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYISOPRENE, THE SAID EMULSION BEING STABLE AND HAVING A VOLUMETRIC PHASE RATIO OF THE POLYISOPRENE SOLUTION TO WATER RANGING FROM 3:1 TO 1:10 AND THE LIQUID PARTICLES OF THE EMULSTION HAVING THE FOLLOWING CHARACTERISTICS:
Claim 2
Dependent Claim
122 words
COMPOSITION COMPRISING OIL-IN WATER EMULSION OF SYNTHETIC, SUBSTANTIALLY GEL-FREE CIS 1,4-POLYISOPRENE, AN INERT HYDROCARBON SOLVENT, AN EMULSIFYING AGENT, AND WATER, THE SAID POLYISOPRENE BEING WHOLLY SOLUBLE IN THE SAID HYDROCARBON AND HAVING AN INTRINSIC VISCOSITY RANGING FROM 1.0 TO 13.0 MEADURED IN TOLUENE AT 25*C., AND BEING PRESENT IN AN AMOUNT BETWEEN 5% AND 15% BY WEIGHT OF THE INSERT HYDROCARBON SOLVENT HAVING UP TO EIGHT CARBON ATOMS, THE EMULSIFYING AGENT BEING PRESENT IN AN AMOUNT IN EXCESS OF 0.25% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYISOPRENE, THE SAID EMULSION BEING STABLE AND HAVING A VOLUMETRIC PHASE RATIO OF THE POLYISOPRENE SOLUTION TO WATER RANGING FROM 3:1 TO 1:10 AND THE LIQUID PARTICLES OF THE EMULSTION HAVING THE FOLLOWING CHARACTERISTICS:
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |