US3255240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing beta-hydroxy-alkane-alpha-sulfonic anhydrides and hydrolysis products thereof
Assignee: Hoechst AG
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Filing: 1965-06-23
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Granted: 1966-06-07
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Wolfram Arthur
- 👤 Kaltenhauser Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/22; C07C303/04; C07C303/06; C07C303/32; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C07D; C07D327/00; C07D327/02; D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/256; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
A PROCESS WHICH COMPRISES INTIMATELY MIXING A MONOOLEFIN OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS WHICH COMPRISES INTIMATELY MIXING A MONOOLEFIN OF THE FORMULA
Claim 3
Dependent Claim
36 words
A PROCESS AS DEFINED IN CLAIM 1 WHEREIN THE ANHYDRIDE IS HYDOLIZED TO THE CORRESPONDING ACID WITH 0.5 TO 3 TIMES THE AMOUNT BY WEIGHT OF WATER AT A TEMPERATURE NEAR THE BOILING POINT OF WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |