US3408438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making self-supporting filter element
Assignee: G S STAUNTON AND CO Inc
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Filing: 1966-06-14
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Granted: 1968-10-29
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Expires: 1986-06-14
Abstract
No abstract record available.
Inventors
- 👤 Richard T Staunton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:55
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/28; B; B01; B01D; B01D29/00; B01D29/01; B01D29/012; B01D29/09; B01D33/00; B01D33/04; B01D39/00; B01D39/14; B01D39/16; B01D39/1669; B01D39/1676; Y; Y10; Y10S; Y10S493/00; Y10S493/941; Y10S55/00; Y10S55/05; Y10S55/13; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD FOR FORMING A SELF-SUPPORTING FILTER ELEMENT COMPRISING THE STEPS OF: PLACING A BATT OF FLEXIBLE NONSELF-SUPPORTING MATERIAL INTO A MOLD HAVING CAVITIES FORMED IN A PREDETERMINED PATTERN THEREIN, SAID BATT BEING LOCATED TO LIEACROSS ALL OF SAID CAVITIES; INJECTING A THERMPLASTIC MATERIAL INTO SAID MOLD AND IN CONTACT WITH AND FILLING THE INTERSTICES AND IN THE PORTIONS OF SAID BATT OVERLYING SAID CAVITIES; AND CURING SAID THERMPLASTIC MATERIAL TO PROVIDE A SUPPORTING FRAME FOR SAID FILTER ELEMENT INTEGRAL WITH SAID FILTER MATERIAL AND WITH SAID PORTIONS OF SAID FILTER MATERIAL UNDERLYING SAID FRAME BEING COMPRESSED TO PREVENT AIR FLOW THEREPAST.
Claim 2
Independent Claim
102 words
A METHOD FOR FORMING A SELF-SUPPORTING FILTER ELEMENT COMPRISING THE STEPS OF: PLACING A BATT OF FLEXIBLE NONSELF-SUPPORTING MATERIAL INTO A MOLD HAVING CAVITIES FORMED IN A PREDETERMINED PATTERN THEREIN, SAID BATT BEING LOCATED TO LIEACROSS ALL OF SAID CAVITIES; INJECTING A THERMPLASTIC MATERIAL INTO SAID MOLD AND IN CONTACT WITH AND FILLING THE INTERSTICES AND IN THE PORTIONS OF SAID BATT OVERLYING SAID CAVITIES; AND CURING SAID THERMPLASTIC MATERIAL TO PROVIDE A SUPPORTING FRAME FOR SAID FILTER ELEMENT INTEGRAL WITH SAID FILTER MATERIAL AND WITH SAID PORTIONS OF SAID FILTER MATERIAL UNDERLYING SAID FRAME BEING COMPRESSED TO PREVENT AIR FLOW THEREPAST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |