US3157675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of thionophosphoric acid with acetal-alcohols
Assignee: Celanese Corp
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Filing: 1960-07-19
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Granted: 1964-11-17
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Expires: 1980-07-19
Abstract
No abstract record available.
Inventors
- 👤 Enrique R Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C10L1/265; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657109; C07F9/657145; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3891; C08G18/40; C08G18/64; C08G18/6461
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
AN ESTER OF THIONOPHOSPHORIC ACID WITH AN ACETALALCOHOL WHICH ACETAL-ALCOHOL IS THE REACTION PRODUCT OF: (1) A POLYOL SELECTED FROM THE GROUP CONSISTING OF TRIMETHYLOPROPANE, TRIMETHYLOETHANE, PENTAERYTHRITOL, ERYTHRITOL, GLYCEROL AND INOSITOL; AND (2) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, CROTONALDEHYDE AND ACETONE.
References Cited (Backward Citations)
US2888492A
Cited
US2847443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |