Patent US2532985A successfully refreshed from Google Patents.
US2532985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing the sticking of polymers to drying, etc., surfaces
Assignee: Standard Oil Development Co
•
Filing: 1946-09-18
•
Granted: 1950-12-05
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 John H Bannon
- 👤 Stanley C Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:09
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29B; B29B9/00; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE PROCESS OF TREATING SOLID HIGH MOLECULAR WEIGHT RUBBERY POLYMER PREPARED FROM ISO-OLEFINS AT TEMPERATURES BELOW ABOUT -20*F. IN THE PRESENCE OF A FRIEDEL-CRAFTS TYPE CATALYST WHICH COMPRISES PASSING THE POLYMER THROUGH A ZONE HEATED TO A TEMPERATURE BETWEEN 100 AND 350*F., THE POLYMER-CONTACTING SURFACES OF WHICH ARE COATED WITH AN OIL OF THE FATTY ACID ESTER TYPE AND CHOSEN FROM THE CLASS CONSISTING OF NON-DRYING OILS AND SEMI-DRYING OILS.
Claim 2
Dependent Claim
70 words
THE PROCESS OF TREATING SOLID HIGH MOLECULAR WEIGHT RUBBERY POLYMER PREPARED FROM ISO-OLEFINS AT TEMPERATURES BELOW ABOUT -20*F. IN THE PRESENCE OF A FRIEDEL-CRAFTS TYPE CATALYST WHICH COMPRISES PASSING THE POLYMER THROUGH A ZONE HEATED TO A TEMPERATURE BETWEEN 100 AND 350*F., THE POLYMER-CONTACTING SURFACES OF WHICH ARE COATED WITH AN OIL OF THE FATTY ACID ESTER TYPE AND CHOSEN FROM THE CLASS CONSISTING OF NON-DRYING OILS AND SEMI-DRYING OILS.
References Cited (Backward Citations)
US2401754A
Cited
US2399262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |