Patent US4230057A successfully refreshed from Google Patents.
US4230057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal insulating material
Assignee: Individual
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Filing: 1978-05-08
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Granted: 1980-10-28
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Expires: 1998-05-08
Abstract
Abstract A thermal insulating material comprises at least two sheets of metallized plastic film, a mesh sandwiched between adjacent film sheets and outer cover layers of mesh sandwiching the film-mesh sandwich. The film-mesh sandwich and the outer meshes are stitched together. Vapor permeability is imparted by perforations through the films.
Inventors
- 👤 Milton Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:22
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B15/00; B32B15/02; B32B15/14; B32B3/00; B32B3/26; B32B3/266; B32B5/02; B32B5/06; F; F16; F16L; F16L59/00; F16L59/02; F16L59/029; F16L59/08; F17; F17C; F17C13/00; F17C13/001; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/70; B32B2307/724; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0308; F17C2203/032; F17C2203/0329; F17C2203/0345; F17C2203/035; F17C2203/0358
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A thermal insulating material comprising at least two sheets of polymeric film, each of which is metallized on at least one side, a mesh sandwiched between each adjacent pair of film sheets, an outer mesh on each outside face of the film-mesh sandwich, rows of stitching joining the outer meshes and film-mesh sandwich, and needle perforations through the film sheets to make the material vapor permeable including both perforations made by the needles which stitch the outer meshes and film-mesh sandwich together which are of a size not less than about four diameters of the stitching thread and additional perforations made by non-threaded needles.
Claim 2
Dependent Claim
104 words
A thermal insulating material comprising at least two sheets of polymeric film, each of which is metallized on at least one side, a mesh sandwiched between each adjacent pair of film sheets, an outer mesh on each outside face of the film-mesh sandwich, rows of stitching joining the outer meshes and film-mesh sandwich, and needle perforations through the film sheets to make the material vapor permeable including both perforations made by the needles which stitch the outer meshes and film-mesh sandwich together which are of a size not less than about four diameters of the stitching thread and additional perforations made by non-threaded needles.
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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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |