US3284361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter coating composition
Assignee: Gulf Research and Development Co
•
Filing: 1964-07-27
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Granted: 1966-11-08
•
Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 Albert G Rocchini
- 👤 Charles E Trautman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:00
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; B; B01; B01D; B01D39/00; B01D39/14; Y; Y10; Y10S; Y10S55/00; Y10S55/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN AIR FILTER COATING COMPOSITION CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF ABOUT 55 TO ABOUT 60 PERCENT BY VOLUME OF TRICRESYL PHOSPHATE, ABOUT 10 TO ABOUT 20 PERCENT BY VOLUME OF A MINERAL OIL HAVING A VISCOSITY OF ABOUT 40 TO ABOUT 45 SUS AT 210*F. AND ABOUT 20 TO ABOUT 30 PERCENT BY VOLUME OF A LIQUID CHLORINATED HYDROCARBON HAVING A VISCOSITY OF ABOUT 160 TO ABOUT 170 SUS AT 210*F. AND A CHLORINE CONTENT OF ABOUT 40 TO ABOUT 55 PERCENT BY WEIGHT.
Claim 2
Dependent Claim
86 words
AN AIR FILTER COATING COMPOSITION CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF ABOUT 55 TO ABOUT 60 PERCENT BY VOLUME OF TRICRESYL PHOSPHATE, ABOUT 10 TO ABOUT 20 PERCENT BY VOLUME OF A MINERAL OIL HAVING A VISCOSITY OF ABOUT 40 TO ABOUT 45 SUS AT 210*F. AND ABOUT 20 TO ABOUT 30 PERCENT BY VOLUME OF A LIQUID CHLORINATED HYDROCARBON HAVING A VISCOSITY OF ABOUT 160 TO ABOUT 170 SUS AT 210*F. AND A CHLORINE CONTENT OF ABOUT 40 TO ABOUT 55 PERCENT BY WEIGHT.
References Cited (Backward Citations)
US2122514A
Cited
US2780308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |