Patent US3852367A successfully refreshed from Google Patents.
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 22:14
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.
References Cited (Backward Citations)
US2371644A
Cited
US3133885A
Cited
US2906782A
Cited
US2935537A
Cited
US2981760A
Cited
US2978518A
Cited
US3043888A
Cited
US3188355A
Cited
US3152191A
Cited
US3293312A
Cited
US3676507A
Cited
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 |