US3202647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer recovery process
Assignee: Shell USA Inc
•
Filing: 1962-11-19
•
Granted: 1965-08-24
•
Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 David B Todd
- 👤 William R Keeler
- 👤 Ronald C Balfour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:39
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/14; C08C; C08C2/00; C08C2/06; C08J2321/00; Y; Y10; Y10S; Y10S159/00; Y10S159/10; Y10S159/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR RECOVERING A SYNTHETIC ELASTOMER FROM ITS SOLUTION IN A HYDROCARBON SOLVENT WHICH COMPRISES (1) FEEDING THE SOLUTION IN ONE ORIFICE OF A TWO FLUID NOZZLE, (2) FEEDING STEAM AT A PRESSURE OF BETWEEN ABOUT 90130 P.S.I.G. INTO A SECOND ORIFICE OF SAID NOZZLE, WHEREBY CRUMB IS INSTANTANEOUSLY FORMED AND SOLVENT INSTANTANEOUSLY FLASHED OFF, (3) RECEIVING THE CRUMB IN A WATER BATH, (4) SEPARATING THE CRUMB FROM THE WATER, AND (5) DRYING THE CRUMB.
Claim 2
Dependent Claim
76 words
A PROCESS FOR RECOVERING A SYNTHETIC ELASTOMER FROM ITS SOLUTION IN A HYDROCARBON SOLVENT WHICH COMPRISES (1) FEEDING THE SOLUTION IN ONE ORIFICE OF A TWO FLUID NOZZLE, (2) FEEDING STEAM AT A PRESSURE OF BETWEEN ABOUT 90130 P.S.I.G. INTO A SECOND ORIFICE OF SAID NOZZLE, WHEREBY CRUMB IS INSTANTANEOUSLY FORMED AND SOLVENT INSTANTANEOUSLY FLASHED OFF, (3) RECEIVING THE CRUMB IN A WATER BATH, (4) SEPARATING THE CRUMB FROM THE WATER, AND (5) DRYING THE CRUMB.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |