US3852367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized trichloroethylene or tetrachloroethylene
Assignee: Central Glass Co Ltd
•
Filing: 1971-12-21
•
Granted: 1974-12-03
•
Expires: 1991-12-21
Abstract
Abstract Trichloroethylene or tetrachloroethylene stabilized against decomposition by heat, light, air, moisture and metals, said trichloroethylene and tetrachloroethylene containing A. GLYCERIN OR GLYCIDOL; B. AT LEAST ONE PHENOLIC DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF P-METHOXYPHENOL, 2,6-DITERT-BUTYL-4-METHYLPHENOL, P-TERT-BUTYLPHENOL, P-SEC-BUTYLPHENOL AND THYMOL; C. DIISOPROPYLAMINE; AND D. EPICHLOROHYDRIN OR BUTYLENE OXIDE.
Inventors
- 👤 S Katsuragawa
- 👤 N Koketsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:01
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A STABILIZED COMPOSITION CONSISTING ESSENTIALLY OF TRICHLOROETHYLENE OR TETRACHLORETHYLENE AND A. 0.0001 TO 1.0 WEIGHT PERCENT OF GLYCERIN; B. 0.00001 TO 0.1 WEIGHT PERCENT OF AT LEAST ONE PHENOLIC DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF PMETHOXYPHENOL, 2,6-DI-TERT.-BUTYL-4-METHYPHENOL, PTERT-BUTYLPHENOL, P-SEC-BUTYL-PHENOL AND TRYMOL; C. 0.0001 TO 0.1 WEIGHT PERCENT OF DIISOPROPOYLAMINE; AND D. 0.001 TO 1.0 WEIGHT PERCENT OF EPICHLOROHYDRIN.
Claim 2
Dependent Claim
59 words
A STABILIZED COMPOSITION CONSISTING ESSENTIALLY OF TRICHLOROETHYLENE OR TETRACHLORETHYLENE AND A. 0.0001 TO 1.0 WEIGHT PERCENT OF GLYCERIN; B. 0.00001 TO 0.1 WEIGHT PERCENT OF AT LEAST ONE PHENOLIC DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF PMETHOXYPHENOL, 2,6-DI-TERT.-BUTYL-4-METHYPHENOL, PTERT-BUTYLPHENOL, P-SEC-BUTYL-PHENOL AND TRYMOL; C. 0.0001 TO 0.1 WEIGHT PERCENT OF DIISOPROPOYLAMINE; AND D. 0.001 TO 1.0 WEIGHT PERCENT OF EPICHLOROHYDRIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |