US3088969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of t-butyl esters of unsaturated acids
Assignee: Standard Oil Co
•
Filing: 1961-04-21
•
Granted: 1963-05-07
•
Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 James L Callahan
- 👤 Arthur F Miller
- 👤 John A Stamm
- 👤 Veatch Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:01
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A PROCESS FOR THE MANUFACTURE OF T-BUTYL ACRYLATE COMPRISING THE STEP OF REACTING ISO-BUTYLENE WITH ACRYLIC ACID IN AN AQUEOUS MEDIUM AT A TEMPERATURE IN THE RANGE OF 100*F. TO 250*F. AND IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHOMOLYBDIC AND PHOSPHORIC ACIDS.
Claim 2
Dependent Claim
48 words
A PROCESS FOR THE MANUFACTURE OF T-BUTYL ACRYLATE COMPRISING THE STEP OF REACTING ISO-BUTYLENE WITH ACRYLIC ACID IN AN AQUEOUS MEDIUM AT A TEMPERATURE IN THE RANGE OF 100*F. TO 250*F. AND IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHOMOLYBDIC AND PHOSPHORIC ACIDS.
References Cited (Backward Citations)
GB814360A
Cited
US2917538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |