Patent US2405591A successfully refreshed from Google Patents.
Patent US3002870A successfully refreshed from Google Patents.
US3002870A
Expired / Lapsed
US
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Liquid filters
Assignee: Fram Corp
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Filing: 1960-09-27
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Granted: 1961-10-03
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Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Belgarde Leo
- 👤 Fairchild Daniel
- 👤 Mahdesyan Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/005; B01D27/04; B01D27/06; B01D27/08; B01D35/00; B01D35/02; F; F02; F02M; F02M37/00; F02M37/22; F02M37/32; Y; Y10; Y10S; Y10S55/00; Y10S55/31; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/49876; Y10T29/49893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF MAKING A LIQUID FILTER, COMPRISING A FILTER ELEMENT HOUSED IN A TRANSPARENT SHELL HAVING AN INLET AND OUTLET, WHEREIN THE SHELL IS FORMED OF TWO TRANSPARENT MOLDED NYLON CUPS, ONE OF WHICH HAS FLEXIBLE INTEGRAL FINGERS PROJECTING INWARDLY FROM ITS BOTTOM AND THE MEETING RIM EDGES OF THE CUPS ARE BONDED TOGETHER, WHICH COMPRISES FORMING A FILTER ELEMENT CLOSED AT ONE END BY A CAP HAVING A HARD, SMOOTH OUTER SURFACE AND AT THE OTHER
Claim 2
Independent Claim
78 words
THE METHOD OF MAKING A LIQUID FILTER, COMPRISING A FILTER ELEMENT HOUSED IN A TRANSPARENT SHELL HAVING AN INLET AND OUTLET, WHEREIN THE SHELL IS FORMED OF TWO TRANSPARENT MOLDED NYLON CUPS, ONE OF WHICH HAS FLEXIBLE INTEGRAL FINGERS PROJECTING INWARDLY FROM ITS BOTTOM AND THE MEETING RIM EDGES OF THE CUPS ARE BONDED TOGETHER, WHICH COMPRISES FORMING A FILTER ELEMENT CLOSED AT ONE END BY A CAP HAVING A HARD, SMOOTH OUTER SURFACE AND AT THE OTHER
References Cited (Backward Citations)
US2933428A
Cited
US2956611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |