US3354093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of polymerized materials from surfaces
Assignee: Phillips Petroleum Co
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Filing: 1965-01-15
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Granted: 1967-11-21
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Expires: 1985-01-15
Abstract
No abstract record available.
Inventors
- 👤 Julius E Early
- 👤 Harwell E Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:05
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5004; C11D7/5027; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C11D7/22; C11D7/26; C11D7/267; C11D7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF REMOVING SYNTHETIC RUBBER POLYMERIC DEPSITIONS FROM SURFACES, SAID DEPOSITIONS CONSISTING ESSENTIALLY OF CONJUGATED DIENES HAVING FROM 4 TO 6 CARBON ATOMS PER MOLELCULE, SAID METHOD COMPRISING CONTACTING SAID DEPOSITIONS WITH AT LEAST ONE MATERIAL SELECTED FRM THE GROUP CONSISTING OF BENZENE, TOLUENE, ETHYLBENZENE, PROPYLBENZENE AND ISOPROPYLBENZENE AND FROM ABOUT 0.05 TO ABOUT 5 WEIGHT PERCENT OF TETRAMETHYLENE OXIDE BASED ON THE TOTAL WEIGHT OF THESE TWO MATERIALS.
Claim 2
Independent Claim
70 words
A METHOD OF REMOVING SYNTHETIC RUBBER POLYMERIC DEPSITIONS FROM SURFACES, SAID DEPOSITIONS CONSISTING ESSENTIALLY OF CONJUGATED DIENES HAVING FROM 4 TO 6 CARBON ATOMS PER MOLELCULE, SAID METHOD COMPRISING CONTACTING SAID DEPOSITIONS WITH AT LEAST ONE MATERIAL SELECTED FRM THE GROUP CONSISTING OF BENZENE, TOLUENE, ETHYLBENZENE, PROPYLBENZENE AND ISOPROPYLBENZENE AND FROM ABOUT 0.05 TO ABOUT 5 WEIGHT PERCENT OF TETRAMETHYLENE OXIDE BASED ON THE TOTAL WEIGHT OF THESE TWO MATERIALS.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |