US2947792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of tetrachloroethylene with a mixture of a hydroxy alkyne and isoeugenol
Assignee: Diamond Shamrock Corp
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Filing: 1954-02-16
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Granted: 1960-08-02
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Expires: 1974-02-16
Abstract
No abstract record available.
Inventors
- 👤 Skeeters Maxwell James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:40
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A COMPOSITION OF MATTER COMPRISING TETRACHLOROETHYLENE AND, AS A GENERAL-PURPOSE STABILIZER, FROM ABOUT 0.1 TO ABOUT 1% BY WEIGHT OF A HYDROXY ALKYNE, AND AS A LIGHT STABILIZER, FROM ABOUT 0.001% TO ABOUT 0.1% BY WEIGHT ISOEUGENOL.
Claim 2
Dependent Claim
37 words
A COMPOSITION OF MATTER COMPRISING TETRACHLOROETHYLENE AND, AS A GENERAL-PURPOSE STABILIZER, FROM ABOUT 0.1 TO ABOUT 1% BY WEIGHT OF A HYDROXY ALKYNE, AND AS A LIGHT STABILIZER, FROM ABOUT 0.001% TO ABOUT 0.1% BY WEIGHT ISOEUGENOL.
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |