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US4900630A Expired / Lapsed US ⏱️ 0.0 years remaining

Glass plate with reflective multilayer coatings to give golden appearance

Assignee: Central Glass Co Ltd
•
Filing: 1988-05-26
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Granted: 1990-02-13
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Expires: 2008-05-26
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Abstract

Abstract A multilayer coating film is provided on one side of a transparent or semitransparent glass plate to afford a golden appearance to the coated glass plate at least when viewed from the uncoated side. Essentially the multilayer coating film is made up of a TiN layer adjacent to the glass plate surface and either a Ti layer or a Cr layer which overlies the TiN layer, and the coating film is formed such that the transmittance of the coated glass plate for visible light becomes not more than 40%. Optionally, the Ti or Cr layer is overlaid with either a TiO 2 film or a Cr 2 O 3 film. Also optionally, either a TiO 2 film or a Cr 2 O 3 film is interposed between the TiN layer and the glass plate surface. Each layer of the multilayer coating film can be formed by sputter deposition using a relatively simple method, an the multilayer coating has good durability.

Inventors

  • 👤 Junichi Suzuki
  • 👤 Masato Nakamura
  • 👤 Nobuyuki Takeuchi
  • 👤 Yasunobu Iida
  • 👤 Hiroyuki Nishii

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 16:49
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3607; C03C17/3613; C03C17/3618; C03C17/3626; C03C17/3649; C03C17/3681; C03C17/3684; G; G02; G02B; G02B1/00; G02B1/10; C03C2217/00; C03C2217/70; C03C2217/78

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 80 words
A coated glass plate, comprising a transparent or semitransparent glass plate and a multilayer coating film which is provided on one side of the glass plate and comprises a TiN layer adjacent to the glass plate surface and a layer of a metal selected from the group consisting of Ti and Cr which overlies said TiN layer, said multilayer coating film being formed such that the transmittance of the coated glass plate for visible light is not more than 40%.
Claim 2
Dependent Claim 80 words
A coated glass plate, comprising a transparent or semitransparent glass plate and a multilayer coating film which is provided on one side of the glass plate and comprises a TiN layer adjacent to the glass plate surface and a layer of a metal selected from the group consisting of Ti and Cr which overlies said TiN layer, said multilayer coating film being formed such that the transmittance of the coated glass plate for visible light is not more than 40%.
Claim 3
Dependent Claim 39 words
A coated glass plate according to claim 1, wherein said multilayer coating film further comprises a layer of a metal oxide selected from the group consisting of TiO 2 and Cr 2 O 3 which overlies said metal layer.
Claim 4
Dependent Claim 45 words
A coated glass plate according to claim 1, wherein said multilayer coating film further comprises a layer of a metal oxide selected from the group consisting of TiO 2 and Cr 2 O 3 which interposes between said TiN layer and the glass plate surface.
Claim 5
Dependent Claim 16 words
A coated glass plate according to claim 1, wherein said transmittance is not more than 20%.
Claim 6
Dependent Claim 20 words
A coated glass plate according to claim 1, wherein said transparent or semitransparent glass plate is a colorless glass plate.
Claim 7
Dependent Claim 20 words
A coated glass plate according to claim 1, wherein said transparent or semitransparent glass plate is a color glass plate.
Claim 8
Dependent Claim 21 words
A coated glass plate according to claim 1, wherein each layer of said multilayer coating film is a sputter deposited film.
Claim 9
Dependent Claim 31 words
A coated glass plate according to claim 7, wherein each of said TiN layer and the layer of said metal has a thickness in the range from 100 to 2000 Å.

References Cited (Backward Citations)

JPS54642A Cited
US4450201A Cited
DD220294A1 Cited
US4640867A Cited
DD224839A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-02-12 1993-08-14 1994-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-02-12 1997-08-14 1998-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-02-12 2001-08-14 2002-02-13 $7700.00 Window Closed / Lapsed

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