US3025233A
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Assignee: Briggs Filtration Co
•
Filing: 1961-11-03
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Granted: 1962-03-13
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Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
- 👤 Donald M Figert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:49
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/003; B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/31; B01D29/33; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/2072; B01D39/2075; B01J; B01J20/00; B01J20/02; B01J20/06; B01J20/08; B01J20/10; B01J20/16; B01J20/18; B01J20/183; B01J20/28; B01J20/28014; B01J20/2803; F24; F24F; F24F13/00; F24F13/28; Y; Y10; Y10S; Y10S210/00; Y10S210/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A POROUS BARRIER SUITABLE FOR FILTERING AND DRYING FLUIDS COMPRISING ABOUT 7%-31% OF A CRYSTALLINE ZEOLITE MOLECULAR SIEVE, ABOUT 39%-93% OF ACTIVATED ALUMINA AND AN INERT, WATER-INSOLUBLE BINDER THAT PERMITS FLUIDS TO PASS THROUGH AND BE FILTERED BY SAID POROUS BARRIER.
Claim 2
Dependent Claim
41 words
A POROUS BARRIER SUITABLE FOR FILTERING AND DRYING FLUIDS COMPRISING ABOUT 7%-31% OF A CRYSTALLINE ZEOLITE MOLECULAR SIEVE, ABOUT 39%-93% OF ACTIVATED ALUMINA AND AN INERT, WATER-INSOLUBLE BINDER THAT PERMITS FLUIDS TO PASS THROUGH AND BE FILTERED BY SAID POROUS BARRIER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |