US3317431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treating reagent and method
Assignee: Wright Chemical Corp
•
Filing: 1964-10-08
•
Granted: 1967-05-02
•
Expires: 1984-10-08
Abstract
No abstract record available.
Inventors
- 👤 Kaye Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:06
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF TREATING COOLING WATER TO CONTROL THE FORMATION OF SCALE CAUSED BY THE AGGIOMERATION AND PRECIPITATION OF HEAT-COAGULABLE INSOLUBLE SUSPENDED PARTICLES WHICH METHOD COMPRISES INTRODUCING AT LEAST 0.5 PART PER MILLION, BY WEIGHT, OF A "CONDENSED" TANNIN INTO SAID COOLING WATER.
Claim 2
Independent Claim
43 words
THE METHOD OF TREATING COOLING WATER TO CONTROL THE FORMATION OF SCALE CAUSED BY THE AGGIOMERATION AND PRECIPITATION OF HEAT-COAGULABLE INSOLUBLE SUSPENDED PARTICLES WHICH METHOD COMPRISES INTRODUCING AT LEAST 0.5 PART PER MILLION, BY WEIGHT, OF A "CONDENSED" TANNIN INTO SAID COOLING WATER.
References Cited (Backward Citations)
GB450547A
Cited
US2363922A
Cited
US2363923A
Cited
US2411074A
Cited
US2439797A
Cited
US3173864A
Cited
US3116105A
Cited
US3184407A
Cited
US3256203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |