US3173864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment and compositions useful therein
Assignee: ChampionX LLC
•
Filing: 1961-02-08
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Granted: 1965-03-16
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Freedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:04
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/12; C02F5/125; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A WATER TREATING PRODUCT COMPRISING AN ARTICLE MADE OF ADHERED PARTICLES IN WHICH THE SOLIDS CONTENT OF SAID ARTICLE IS AT LEAST 40% BY WEIGHT OF WATER-SOLUBLE LIGNOSULFONATE PARTICLES, SAID LIGNOSULFONATE CONTAINING 1040% BY WEIGHT, BASED ON SAID LIGNOSULFONATE, OF SUGAR ACIDS, AND A MEMBER FROM THE GROUP CONSISTING OF SODIUM CHROMATE PARTICLES AND SODIUM DICHROMATE PARTICLES PRESENT IN A WEIGHT RATIO IN THE RANGE OF 2:3 TO 6:1.
Claim 2
Dependent Claim
69 words
A WATER TREATING PRODUCT COMPRISING AN ARTICLE MADE OF ADHERED PARTICLES IN WHICH THE SOLIDS CONTENT OF SAID ARTICLE IS AT LEAST 40% BY WEIGHT OF WATER-SOLUBLE LIGNOSULFONATE PARTICLES, SAID LIGNOSULFONATE CONTAINING 1040% BY WEIGHT, BASED ON SAID LIGNOSULFONATE, OF SUGAR ACIDS, AND A MEMBER FROM THE GROUP CONSISTING OF SODIUM CHROMATE PARTICLES AND SODIUM DICHROMATE PARTICLES PRESENT IN A WEIGHT RATIO IN THE RANGE OF 2:3 TO 6:1.
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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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |