US2692231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiocidal water treatment
Assignee: California Research LLC
•
Filing: 1950-09-05
•
Granted: 1954-10-19
•
Expires: 1970-09-05
Abstract
No abstract record available.
Inventors
- 👤 Richard D Stayner
- 👤 Gordon B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; Y; Y10; Y10S; Y10S210/00; Y10S210/928; Y10S507/00; Y10S507/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD OF TREATING PAPER MILL WHITE WATER CONTAINING MICROBIOLIGICAL ORGANISMS WHICH COMPRISES ADDING TO SAID WATER FROM ABOUT 50 TO ABOUT 250 P.P.M. OF A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 30% TO 90% BY WEIGHT OF A LONG-CHAIN ALKYLBENZYL TRIMETHYL AMMONIUM HALIDE HAVING FROM 6 TO 26 CARBON ATOMS IN THE LONG-CHAIN ALKYL GROUP AND FROM ABOUT 10% TO 70% BY WEIGHT OF A NONANIONIC ORGANIC MATERIAL HAVING A SOLUBILITY IN WATER OF LESS THAN ABOUT 5% AND BEING CHARACTERIZED BY A HIGH MOLECULAR WEIGHT HYDROPHOBIC GROUP SELECTED FROM THE GROUP CONSISTING OF PINE OIL, OCTYLPHENYLETHYLENEGLYCOL ETHER, AND OCTYLPHENYLDIETHYLENEGLYCOL ETHER.
Claim 2
Independent Claim
102 words
A METHOD OF TREATING PAPER MILL WHITE WATER CONTAINING MICROBIOLIGICAL ORGANISMS WHICH COMPRISES ADDING TO SAID WATER FROM ABOUT 50 TO ABOUT 250 P.P.M. OF A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 30% TO 90% BY WEIGHT OF A LONG-CHAIN ALKYLBENZYL TRIMETHYL AMMONIUM HALIDE HAVING FROM 6 TO 26 CARBON ATOMS IN THE LONG-CHAIN ALKYL GROUP AND FROM ABOUT 10% TO 70% BY WEIGHT OF A NONANIONIC ORGANIC MATERIAL HAVING A SOLUBILITY IN WATER OF LESS THAN ABOUT 5% AND BEING CHARACTERIZED BY A HIGH MOLECULAR WEIGHT HYDROPHOBIC GROUP SELECTED FROM THE GROUP CONSISTING OF PINE OIL, OCTYLPHENYLETHYLENEGLYCOL ETHER, AND OCTYLPHENYLDIETHYLENEGLYCOL ETHER.
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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) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |