Patent US3076302A successfully refreshed from Google Patents.
US3076302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated filter
Assignee: Research Products Corp
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Filing: 1960-10-31
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Granted: 1963-02-05
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Milton J Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:53
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/10; B01D39/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A LAMINATED AIR FILTER BODY OF THE CLASS DESCRIBED, COMPRISING A PAIR OF SPACED OUTER LAYERS OF EXPANDED METAL FOIL MATERIAL, AND A CENTRAL CORE OF EXPANDED METAL SHEET MATERIAL DISPOSED BETWEEN SAID OUTER LAYERS, SAID CORE HAVING CORRUGATIONS WITH A PLURALITY OF FLAT OUTER WALLS DISPOSED IN A PAIR OF SPACED PLANES WHICH ARE PARALLEL TO THE GENERAL EXTENT OF SAID CORE AND TO THE PLANE OF THE FILTER BODY, SAID WALLS INCLUDING BAFFLE ELEMENTS THEREIN WHICH ARE BOUND TO THE RESPECTIVE ADJACENT OUTER LAYER.
Claim 2
Dependent Claim
86 words
A LAMINATED AIR FILTER BODY OF THE CLASS DESCRIBED, COMPRISING A PAIR OF SPACED OUTER LAYERS OF EXPANDED METAL FOIL MATERIAL, AND A CENTRAL CORE OF EXPANDED METAL SHEET MATERIAL DISPOSED BETWEEN SAID OUTER LAYERS, SAID CORE HAVING CORRUGATIONS WITH A PLURALITY OF FLAT OUTER WALLS DISPOSED IN A PAIR OF SPACED PLANES WHICH ARE PARALLEL TO THE GENERAL EXTENT OF SAID CORE AND TO THE PLANE OF THE FILTER BODY, SAID WALLS INCLUDING BAFFLE ELEMENTS THEREIN WHICH ARE BOUND TO THE RESPECTIVE ADJACENT OUTER LAYER.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |