US3256203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling water treatment and compositions useful therein
Assignee: ChampionX LLC
•
Filing: 1963-11-18
•
Granted: 1966-06-14
•
Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Reed S Robertson
- 👤 Walter J Ryzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A CORROSION INHIBITING COMPOSITION USEFUL IN PREVENTING CORROSION OF IRON SURFACES IN CONTACT WITH COOLING WATERS CONSISTING ESSENTIALLY OF A CHELATING SYSTEM TO COMPLEX WATER-DISPERSIBLE IRON SPECIES EXISTING IN SAID COOLING WATER WHICH CHELATING SYSTEM COMPRISES 10-70 PARTS BY WEIGHT OF A WATER-DISPERSIBLE TANNIN AND 5-50 PARTS BY WEIGHT OF A SUGAR COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUGAR ACIDS AND SALTS THEREOF; AND 10-60 PARTS BY WEIGHT OF A MASKING AGENT TO RETARD SAID COMPLEXING ACTION OF SAID CHECLATING SYSTEM, WHICH COMPRISES A WATERSOLUBLE INORGANIC METAL SALT CONTAINING A MULTIVALENT METAL ION SELECTED FROM THE GROUP CONSISTING OF ZINC, ALUMINUM, CADIUM, COBALT, NICKEL AND MANGANESE.
Claim 2
Dependent Claim
107 words
A CORROSION INHIBITING COMPOSITION USEFUL IN PREVENTING CORROSION OF IRON SURFACES IN CONTACT WITH COOLING WATERS CONSISTING ESSENTIALLY OF A CHELATING SYSTEM TO COMPLEX WATER-DISPERSIBLE IRON SPECIES EXISTING IN SAID COOLING WATER WHICH CHELATING SYSTEM COMPRISES 10-70 PARTS BY WEIGHT OF A WATER-DISPERSIBLE TANNIN AND 5-50 PARTS BY WEIGHT OF A SUGAR COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUGAR ACIDS AND SALTS THEREOF; AND 10-60 PARTS BY WEIGHT OF A MASKING AGENT TO RETARD SAID COMPLEXING ACTION OF SAID CHECLATING SYSTEM, WHICH COMPRISES A WATERSOLUBLE INORGANIC METAL SALT CONTAINING A MULTIVALENT METAL ION SELECTED FROM THE GROUP CONSISTING OF ZINC, ALUMINUM, CADIUM, COBALT, NICKEL AND MANGANESE.
References Cited (Backward Citations)
US2733196A
Cited
GB191507398A
Cited
US1910403A
Cited
US2831022A
Cited
US2815328A
Cited
US3105822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |