US3183285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a unit filter assembly
Assignee: American Air Filter Co Inc
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Filing: 1961-07-31
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Granted: 1965-05-11
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Robert J Boylan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:25
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/60; B; B01; B01D; B01D29/00; B01D29/01; B01D29/012; Y; Y10; Y10S; Y10S264/00; Y10S264/48; Y10S425/00; Y10S425/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF FORMING A FILTER ASSEMBLY OF A TYPE INCLUDING AN OPEN-END BORDER FRAME MEMBER HAVING A SHEET OF FILTER MEDIUM DISPOSED THEREIN AND SUPPORTED THEREBY COMPRISING THE STEPS OF SUPPLYING A CONTROLLED QUANTITY OF EXPANSIBLE POLYMERIC PLASTIC COMPOUND IN UNEXPANDED FORM ALONG A PARTIALLY CONFINED BORDER FRAME MOLD SURROUNDING A FILTER MEDIUM SUPPORT ZONE, POSITIONING AND SUPPORTING AN APPROPRIATELY SIZED SHEET OF POROUS FILTER MEDIUM ADJACENT SAID PARTIALLY CONFINED MOLD WITH PERIPHERAL EDGE PORTIONS OF SAID MEDIUM EXTENDING OVER SAID EXPANSIBLE PLASTIC COMPOUND INTRODUCED ALONG SAID
Claim 2
Independent Claim
88 words
A METHOD OF FORMING A FILTER ASSEMBLY OF A TYPE INCLUDING AN OPEN-END BORDER FRAME MEMBER HAVING A SHEET OF FILTER MEDIUM DISPOSED THEREIN AND SUPPORTED THEREBY COMPRISING THE STEPS OF SUPPLYING A CONTROLLED QUANTITY OF EXPANSIBLE POLYMERIC PLASTIC COMPOUND IN UNEXPANDED FORM ALONG A PARTIALLY CONFINED BORDER FRAME MOLD SURROUNDING A FILTER MEDIUM SUPPORT ZONE, POSITIONING AND SUPPORTING AN APPROPRIATELY SIZED SHEET OF POROUS FILTER MEDIUM ADJACENT SAID PARTIALLY CONFINED MOLD WITH PERIPHERAL EDGE PORTIONS OF SAID MEDIUM EXTENDING OVER SAID EXPANSIBLE PLASTIC COMPOUND INTRODUCED ALONG SAID
References Cited (Backward Citations)
GB167457A
Cited
US2193935A
Cited
US2220127A
Cited
US2782887A
Cited
FR1104477A
Cited
US3036342A
Cited
US3067149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |