Patent US3565959A successfully refreshed from Google Patents.
US3565959A
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US
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Process for oxidizing mercaptans to disulfides
Assignee: Eneos Corp
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Filing: 1968-05-24
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Granted: 1971-02-23
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Expires: 1988-05-24
Abstract
Abstract A PROCESS FOR OXIDIZING MERCAPTANS HAVING HARMFUL PROPERTIES AND MOLODORS TO FACILITATE REMOVAL THEREOF BY CONVERTING THEM INTO DISULFIDES BY OXIDATION THEREOF WHICH COMPRISES BRINGING MERCAPTANS INTO CONTACT WITH AN OXIDIZING AGENT SUCH AS OXYGEN OR OXYGEN-CONTAINING GASES IN THE PRESENCE OF A POLY METALO-PHTHALOCYANINE COMPOUND OBTAINED BY REACTING AT LEAST A METAL SALT OF METALS OF IRON, COPPER, COBALT, NICKEL, CHROMIUM, MANGANESE, ZINC, VANADIUM AND MOLYBDENUM WITH PYROMELLITONITRILE, OR, A MIXTURE OF UREA AND ANY ONE OF PYROMELLITIC ANHYDRIDE, PYROMELLITIC ACID OR PYROMELLLITIC ACID IMIDE.
Inventors
- 👤 Sinji Takase
- 👤 Masao Nambu
- 👤 Harumichi Watanabe
- 👤 Tomonori Shioiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:21
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/10; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/485; B01J; B01J31/00; B01J31/16; B01J31/165; B01J31/1658; B01J31/18; B01J31/1805; B01J31/181; B01J31/1825; B01J31/183; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/10; B01J2531/16; B01J2531/60; B01J2531/64; B01J2531/80; B01J2531/84; B01J2531/842; B01J2531/845
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |