US2998461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of trichloroethylene
Assignee: Hooker Chemical Corp
•
Filing: 1959-04-15
•
Granted: 1961-08-29
•
Expires: 1979-04-15
Abstract
No abstract record available.
Inventors
- 👤 Donald H Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
THE METHOD OF STABILIZING TRICHLOROETHYLENE AGAINST DECOMPOSITION WHICH COMPRISES INCORPORATING IN SAID TRICHLOROETHYLENE A STABILIZER COMPRISING IN COMBINATION ABOUT 0.01 TO 1.0 PERCENT BY WEIGHT OF TETRAHYDROFURAN AND ABOUT 0.001 TO 0.10 PERCENT BY WEIGHT OF N-METHYL PYRROLE.
Claim 2
Independent Claim
38 words
THE METHOD OF STABILIZING TRICHLOROETHYLENE AGAINST DECOMPOSITION WHICH COMPRISES INCORPORATING IN SAID TRICHLOROETHYLENE A STABILIZER COMPRISING IN COMBINATION ABOUT 0.01 TO 1.0 PERCENT BY WEIGHT OF TETRAHYDROFURAN AND ABOUT 0.001 TO 0.10 PERCENT BY WEIGHT OF N-METHYL PYRROLE.
References Cited (Backward Citations)
US2371645A
Cited
US2803676A
Cited
US2742509A
Cited
US2802885A
Cited
US2795623A
Cited
US2870094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |