Patent US4363734A successfully refreshed from Google Patents.
US4363734A
Expired / Lapsed
US
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1,3-Dihydroxy acetone as an oxygen scavenger for water
Assignee: ChampionX LLC
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Filing: 1981-08-27
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Granted: 1982-12-14
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Expires: 2001-08-27
Abstract
Abstract An improved method for scavenging dissolved oxygen from alkaline waters which comprises using dihydroxy acetone catalyzed with at least 1 percent based on the weight of said dihydroxy acetone, of a catalyst from the group consisting of hydroquinone and a water-soluble compound of manganese.
Inventors
- 👤 Manuel Slovinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:43
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/122; C02; C02F; C02F1/00; C02F1/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
An improved method for scavenging dissolved oxygen from alkaline waters which comprises using dihydroxy acetone catalyzed with at least 1 percent, based on the weight of said dihydroxy acetone, of a catalyst from the group consisting of hydroquinone and a water-soluble compound of manganese.
Claim 2
Dependent Claim
44 words
An improved method for scavenging dissolved oxygen from alkaline waters which comprises using dihydroxy acetone catalyzed with at least 1 percent, based on the weight of said dihydroxy acetone, of a catalyst from the group consisting of hydroquinone and a water-soluble compound of manganese.
Claim 3
Dependent Claim
10 words
The method of claim 1 where the catalyst is hydroquinone.
Claim 4
Dependent Claim
14 words
The method of claim 1 where the catalyst is a water-soluble compound of manganese.
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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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |