Patent US4100317A successfully refreshed from Google Patents.
US4100317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal leaf
Assignee: Oike and Co Ltd
•
Filing: 1975-05-19
•
Granted: 1978-07-11
•
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 06:40
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
Cited
US2607711A
Cited
US2767105A
Cited
US2923651A
Cited
US2978376A
Cited
US3008850A
Cited
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 |