US4055467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzymatic dispersion of biological slimes
Assignee: ChampionX LLC
•
Filing: 1976-12-20
•
Granted: 1977-10-25
•
Expires: 1996-12-20
Abstract
Abstract Slime in industrial process waters can be dispersed and prevented by treating the waters with a few ppm of the enzyme, Rhozyme HP-150, a pentosanase-hexosanase.
Inventors
- 👤 Ronald J. Christensen
- 👤 George J. Zivtins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:57
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; C02F5/00; C02F5/08; C02F5/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
34 words
A method for preventing slimes from being deposited on solid surfaces in contact with industrial process waters which comprises treating these waters with at least 3 ppm of the enzyme, Rhozyme HP-150, a pentosanase-hexosanase.
Claim 2
Independent Claim
34 words
A method for preventing slimes from being deposited on solid surfaces in contact with industrial process waters which comprises treating these waters with at least 3 ppm of the enzyme, Rhozyme HP-150, a pentosanase-hexosanase.
Claim 3
Dependent Claim
15 words
The method of claim 1 where the industrial process water is a cooling tower water.
References Cited (Backward Citations)
US3773623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |