US3029201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment
Assignee: Universal Oil Products Co
•
Filing: 1959-12-28
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Granted: 1962-04-10
•
Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Brown
- 👤 William K T Gleim
- 👤 Urban Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:46
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/06; C02F11/08; B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J31/18; B01J31/1805; B01J31/181; B01J31/1825; B01J31/183; C02F1/00; C02F1/72; C02F1/725; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/50; B01J2531/56; B01J2531/80; B01J2531/84; B01J2531/845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A METHOD OF TREATING WATER CONTAINING AN INORGANIC SULFIDE IMPURITY IN A CONCENTRATION OF LESS THAN 5% BY WEIGHT OF SAID WATER, WHICH COMPRISES REACTING SAID SULFIDE IMPURITY WITH AN OXIDIZING AGENT IN THE PRESENCE OF A PHTHALOCYANINE CATALYST.
Claim 2
Independent Claim
39 words
A METHOD OF TREATING WATER CONTAINING AN INORGANIC SULFIDE IMPURITY IN A CONCENTRATION OF LESS THAN 5% BY WEIGHT OF SAID WATER, WHICH COMPRISES REACTING SAID SULFIDE IMPURITY WITH AN OXIDIZING AGENT IN THE PRESENCE OF A PHTHALOCYANINE CATALYST.
References Cited (Backward Citations)
US2882224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |