US4714631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapidly removable undercoating for vacuum deposition of patterned layers onto substrates
Assignee: 3M Touch Systems Inc
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Filing: 1986-09-29
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Granted: 1987-12-22
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Expires: 2006-09-29
Abstract
Abstract An undercoating for the vacuum deposition of material thereover that can be removed from a substrate by washing with water for one minute or less comprising a water soluble film-forming polymers, a solubility accelerator and a solid particulate material that provides a rough surface topology to the undercoating when dried.
Inventors
- 👤 Brian E. Aufderheide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:46
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; B; B05; B05D; B05D1/00; B05D1/32; B05D1/322; B05D1/327; B41; B41M; B41M7/00; B41M7/0027; H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/048; H01; H01H; H01H2229/00; H01H2229/012; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24835; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
146 words
In the combination of a substrate, a patterned undercoating on a surface of the substrate, and a layer of vacuum deposited material over the patterned layer of undercoating, the improvement wherein the undercoating comprises a combination of the following ingredients: (1) a water soluble film-forming polymer consisting of a polymer having a Water Solubility Rate, measured as defined in the specification, in the range of 1 to 10 hours; (2) a solubility accelerator consisting of a compound compatible with the film-forming polymer and having a Water Solubility Rate, measured as defined in the specification, of 30 minutes or less; and (3) a solid particular material insoluble in the film-forming polymer and providing a rough surface topology to a dried layer of the undercoating; the undercoating and vacuum deposited material thereover characterized in being removable from the substrate by washing with water for one minute or less.
Claim 2
Dependent Claim
146 words
In the combination of a substrate, a patterned undercoating on a surface of the substrate, and a layer of vacuum deposited material over the patterned layer of undercoating, the improvement wherein the undercoating comprises a combination of the following ingredients: (1) a water soluble film-forming polymer consisting of a polymer having a Water Solubility Rate, measured as defined in the specification, in the range of 1 to 10 hours; (2) a solubility accelerator consisting of a compound compatible with the film-forming polymer and having a Water Solubility Rate, measured as defined in the specification, of 30 minutes or less; and (3) a solid particular material insoluble in the film-forming polymer and providing a rough surface topology to a dried layer of the undercoating; the undercoating and vacuum deposited material thereover characterized in being removable from the substrate by washing with water for one minute or less.
Claim 3
Dependent Claim
29 words
A combination according to claim 1, wherein: the film-forming polymer is polyvinyl alcohol, poly(acrylic acid) or polyvinyl pyrollidone, and has an average molecular weight of at least about 2,000.
Claim 4
Dependent Claim
32 words
A combination according to claim 1 or 2, wherein: the solubility accelerator is a sugar, salt, organic acid or organic alcohol, and has an average molecular weight of about 1,000 or less.
Claim 5
Dependent Claim
30 words
A combination according to claim 1 or 2, wherein: the solid particulate is aluminum powder, carbon black, silica, sodium potassium aluminum silicate, fine glass beads or TiO 2 coated mica.
Claim 6
Dependent Claim
28 words
A combination according to claim 3 wherein: the solid particulate is aluminum powder, carbon black, silica, sodium potassium aluminum silicate, fine glass beads or TiO 2 coated mica.
Claim 7
Independent Claim
206 words
A method for producing a patterned layer of a material on a substrate including the steps of: (1) applying an undercoating on a surface of the substrate in a pattern including one or more first portions covered by the undercoating and one or more second portions of the surface free of the undercoating, the undercoating comprising, in combination, (a) a water soluble film-forming polymer consisting of a polymer having a Water Solubility Rate, measured as defined in the specification, in the range of 1 to 10 hours; (b) a solubility accelerator consisting of a compound compatible with the film-forming polymer and having a Water Solubility Rate, measured as defined in the specification, of 30 minutes or less; and (c) a solid particulate material insoluble in the film-forming polymer and providing a rough surface topology to a dried layer of the undercoating; (2) vacuum depositing a material over each first portion and each second portion of the surface of the substrate; (3) removing the undercoating and vacuum deposited material adhering thereto from each first portion of the surface of the substrate by washing with water for one minute or less, thereby providing the substrate with vacuum deposited material adhering to each second portion of the surface thereof.
Claim 8
Independent Claim
206 words
A method for producing a patterned layer of a material on a substrate including the steps of: (1) applying an undercoating on a surface of the substrate in a pattern including one or more first portions covered by the undercoating and one or more second portions of the surface free of the undercoating, the undercoating comprising, in combination, (a) a water soluble film-forming polymer consisting of a polymer having a Water Solubility Rate, measured as defined in the specification, in the range of 1 to 10 hours; (b) a solubility accelerator consisting of a compound compatible with the film-forming polymer and having a Water Solubility Rate, measured as defined in the specification, of 30 minutes or less; and (c) a solid particulate material insoluble in the film-forming polymer and providing a rough surface topology to a dried layer of the undercoating; (2) vacuum depositing a material over each first portion and each second portion of the surface of the substrate; (3) removing the undercoating and vacuum deposited material adhering thereto from each first portion of the surface of the substrate by washing with water for one minute or less, thereby providing the substrate with vacuum deposited material adhering to each second portion of the surface thereof.
Claim 9
Dependent Claim
36 words
A method according to claim 6, including the step of: including a film-forming polymer in the undercoating of polyvinyl alcohol, poly(acrylic acid) or polyvinyl pyrollidone that has an average molecular weight of at least about 2,000.
Claim 10
Dependent Claim
38 words
A method according to claim 6 or 7, including the step of: including a solubility accelerator in the undercoating of a sugar, salt, organic acid or organic alcohol, that has an average molecular of about 1,000 or less.
Claim 11
Dependent Claim
37 words
A method according to claim 6 or 7, including the step of: including a solid particulate in the undercoating of aluminum powder, carbon black, silica, sodium potassium aluminum silicate, fine glass beads or TiO 2 coated mica.
Claim 12
Dependent Claim
35 words
A method according to claim 8 including the step of: including a solid particulate in the undercoating of aluminum powder, carbon black, silica, sodium potassium aluminum silicate, fine glass beads or TiO 2 coated mica.
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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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |