US3803243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of secondary and tertiary alkyl aromatic hydrocarbons
Assignee: Sunoco Inc
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Filing: 1970-04-21
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Granted: 1974-04-09
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Expires: 1990-04-21
Abstract
Abstract COPPER POLYPHTHALOCYANINE WHICH HAS BEEN ACTIVATED BY CONTACT WITH AN AROMATIC HETEROCYCLIC AMINE TO FORM A NOVEL COMPLEX IS FOUND TO BE AN EFFECTIVE CATALYST FOR THE OXIDATION OF SECONDARY AND TERTIARY ALKYL AROMATICS SUCH AS ETHYLBENZENE OR CUMENE TO FORM THE CORRESPONDING HYDROPEROXIDE. THE RATE OF CONVERSION AND THE PERCENTAGE YIELD IS GREATER THAN THAT WITH COPPER PHTHALOCYANINE OR COPPER POLYPHTHALOCYANINE PER SE.
Inventors
- 👤 A Brownstein
- 👤 D Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:29
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/14; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/16; B01J31/165; B01J31/1658; B01J31/18; B01J31/1805; B01J31/181; B01J31/1825; B01J31/183; B01J31/40; B01J31/4015; B01J31/4023; B01J31/403; C07C407/00; C07C409/04; C07C409/08; C07C409/10; C07C409/12; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/10; B01J2531/16; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |