Patent US929140A successfully refreshed from Google Patents.
US3048628A
Expired / Lapsed
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Oxidation process
Assignee: Union Carbide Corp
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Filing: 1959-05-22
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Granted: 1962-08-07
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Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 John W Lynn
- 👤 Richard L Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:17
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/316
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR PRODUCING 1,2,4-BUTANETRICARBOXYLIC ACID WHICH COMPRISES REACTING WITH NITRIC ACID OF A CONCONTRATION OF 40 PERCENT OF 90 PERCENT BY WEIGHT, AT A TEMPERATURE OF 40*C. TO 80*C., 3-CYCLOHEXENYLMETHYL 3-CYCLOHEXENE-1-CARBOXYLATE, THE MOLE RATIO OF NITRIC ACID TO ESTER BEING WITHIN THE RANGE OF 5 TO 20 MOLES OF NITRIC ACID TO ONE MOLE OF ESTER; SAID REACTION TAKING PLACE IN THE PRESENCE OF BETWEEN 0.01 AND 1.0 WEIGHT PERCENT, BASED ON THE TOTAL WEIGHT OF NITRIC ACID AND ESTER, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM VANADATE, ALKALI METAL VANADATES. AMMONIUM MOLYBDATE AND ALKALI METAL MOLYBDATES.
Claim 2
Dependent Claim
101 words
A PROCESS FOR PRODUCING 1,2,4-BUTANETRICARBOXYLIC ACID WHICH COMPRISES REACTING WITH NITRIC ACID OF A CONCONTRATION OF 40 PERCENT OF 90 PERCENT BY WEIGHT, AT A TEMPERATURE OF 40*C. TO 80*C., 3-CYCLOHEXENYLMETHYL 3-CYCLOHEXENE-1-CARBOXYLATE, THE MOLE RATIO OF NITRIC ACID TO ESTER BEING WITHIN THE RANGE OF 5 TO 20 MOLES OF NITRIC ACID TO ONE MOLE OF ESTER; SAID REACTION TAKING PLACE IN THE PRESENCE OF BETWEEN 0.01 AND 1.0 WEIGHT PERCENT, BASED ON THE TOTAL WEIGHT OF NITRIC ACID AND ESTER, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM VANADATE, ALKALI METAL VANADATES. AMMONIUM MOLYBDATE AND ALKALI METAL MOLYBDATES.
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) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |