US3040108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of perchloroethylene
Assignee: Hooker Chemical Corp
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Filing: 1960-11-14
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Granted: 1962-06-19
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Donald H Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:10
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02854; C23G5/02883; C23G5/0289; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
THE METHOD OF STABILIZING PERCHLOROETYLENE AGAINST DECOMPOSITION WHICH COMPRISES INCORPORATING IN SAID PERCHLOROETHYLENE 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 PYROLE.
Claim 2
Independent Claim
38 words
THE METHOD OF STABILIZING PERCHLOROETYLENE AGAINST DECOMPOSITION WHICH COMPRISES INCORPORATING IN SAID PERCHLOROETHYLENE 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 PYROLE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |