US2928859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of acids with alkyl orthocarboxylates
Assignee: Solutia Inc
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Filing: 1958-06-23
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Granted: 1960-03-15
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Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 Preston Jack
- 👤 Iii Howard G Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:16
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07C; C07C303/00; C07C303/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR ALKYLATING ACIDS WHICH COMPRISES REACTING AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND PHOSPHONIC ACIDS WITH A TRIALKYL ORTHOESTER OF A MONOCARBOXYLIC ACID OF FROM ONE TO FIVE CARBON ATOMS IN WHICH EACH ALKYL GROUP CONTAINS FROM ONE TO SIX CARBON ATOMS INCLUSIVE AND RECOVERING THE ALKYL ESTER OF THE SAID ACID SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND PHOSPHONIC ACIDS SO PRODUCED.
Claim 2
Dependent Claim
71 words
A PROCESS FOR ALKYLATING ACIDS WHICH COMPRISES REACTING AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND PHOSPHONIC ACIDS WITH A TRIALKYL ORTHOESTER OF A MONOCARBOXYLIC ACID OF FROM ONE TO FIVE CARBON ATOMS IN WHICH EACH ALKYL GROUP CONTAINS FROM ONE TO SIX CARBON ATOMS INCLUSIVE AND RECOVERING THE ALKYL ESTER OF THE SAID ACID SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND PHOSPHONIC ACIDS SO PRODUCED.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |