US4100317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal leaf
Assignee: Oike and Co Ltd
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Filing: 1975-05-19
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Granted: 1978-07-11
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Expires: 1995-05-19
Abstract
Abstract A metal leaf comprising (1) a resinous layer having a thickness of 0.35 to 1μ, (2) a deposition layer, made of a metal selected from the group consisting of gold, silver, aluminum and copper, having a thickness of 0.03 to 0.1μ, and (3) a resinous layer having a thickness of 0.35 to 1μ; which being integrated in order of (1), (2) and (3) and having a thickness of 0.73 to 2.1μ and a tensile strength of 0.01 to 1.4 kg./mm 2 . It has the same characteristics as those of a conventional metal leaf by handicrafting, and is produced by providing the metal leaf on a base film, elongating the base film to peel out of the leaf and recovering.
Inventors
- 👤 Hiroshi Narui
- 👤 Ikuo Akune
- 👤 Yosiya Kobiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:49
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/10; B44C1/14; C; C23; C23C; C23C14/00; C23C14/0005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
176 words
A metal leaf having a critical self-supportability consisting of (1) a resinous base layer having a thickness of 0.35 to 1 μ and made of at least one resin selected from the group consisting of acrylic resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, rosin-modified maleic resin, resol-type or novolak-type phenolic resin, urea resin, melamine resin, nitrocellulose, cellulose acetate, alkyd resin, urethane resin, rosin and shellac, (2) a vacuum-metallized intermediate metal deposition layer a metal selected from the group consisting of gold, silver, aluminum and copper, having a thickness of 0.03 to 0.1 μ, and (3) a resinous top layer having a thickness of 0.35 to 1 μ and made of at least one resin selected from the group consisting of acrylic resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, rosin-modified maleic resin, resol-type or novolak-type phenolic resin, urea resin, melamine resin, nitrocellulose, cellulose acetate, alkyd resin, urethane resin, rosin and shellac; layers (1), (2) and (3) having a thickness of 0.73 to 2.1 μ and a tensile strength of 0.01 to 1.4 kg./mm 2 .
Claim 2
Dependent Claim
176 words
A metal leaf having a critical self-supportability consisting of (1) a resinous base layer having a thickness of 0.35 to 1 μ and made of at least one resin selected from the group consisting of acrylic resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, rosin-modified maleic resin, resol-type or novolak-type phenolic resin, urea resin, melamine resin, nitrocellulose, cellulose acetate, alkyd resin, urethane resin, rosin and shellac, (2) a vacuum-metallized intermediate metal deposition layer a metal selected from the group consisting of gold, silver, aluminum and copper, having a thickness of 0.03 to 0.1 μ, and (3) a resinous top layer having a thickness of 0.35 to 1 μ and made of at least one resin selected from the group consisting of acrylic resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, rosin-modified maleic resin, resol-type or novolak-type phenolic resin, urea resin, melamine resin, nitrocellulose, cellulose acetate, alkyd resin, urethane resin, rosin and shellac; layers (1), (2) and (3) having a thickness of 0.73 to 2.1 μ and a tensile strength of 0.01 to 1.4 kg./mm 2 .
Claim 3
Dependent Claim
38 words
The metal leaf of claim 1 further containing many randomly perforated holes which are scarcely able to be noticed at one view, said holes being present in an amount of about 5 to 3,000 holes/100 cm 2 .
References Cited (Backward Citations)
US2019951A
Cited
US2062226A
Cited
US2017367A
Cited
US2622041A
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US2607711A
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US2767105A
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US2923651A
Cited
US2978376A
Cited
US3008850A
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US3677792A
Cited
US3551270A
Cited
US3518108A
Cited
US3686018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |