US3116969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical coating for filters
Assignee: WORTH CHEMICAL PRODUCTS Co
•
Filing: 1961-03-22
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Granted: 1964-01-07
•
Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Roy L Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:28
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A COATING COMPOSITION FOR THE FILTERING SURFACES OF AN AIR FILTER COMPRISING ABOUT 50 PARTS BY WEIGHT WATER, ABOUT 1 PART BY WEIGHT METHYL CELLULOSE, ABOUT 20 PARTS BY WEIGHT DIISOBUTYL PHENOXY ETHOXY DIMETHYL BENZYL AMMONIUM CHLORIDE, ABOUT 5 PARTS BY WEIGHT BLACK STRAP MOLASSES AND ABOUT 30 PARTS BY WEIGHT TRIETHYLENE GLYCOL.
Claim 2
Dependent Claim
53 words
A COATING COMPOSITION FOR THE FILTERING SURFACES OF AN AIR FILTER COMPRISING ABOUT 50 PARTS BY WEIGHT WATER, ABOUT 1 PART BY WEIGHT METHYL CELLULOSE, ABOUT 20 PARTS BY WEIGHT DIISOBUTYL PHENOXY ETHOXY DIMETHYL BENZYL AMMONIUM CHLORIDE, ABOUT 5 PARTS BY WEIGHT BLACK STRAP MOLASSES AND ABOUT 30 PARTS BY WEIGHT TRIETHYLENE GLYCOL.
References Cited (Backward Citations)
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Cited
US2544732A
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US2569575A
Cited
US2638180A
Cited
US2620044A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |