Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 5215832 - Lead-free mirrors and environmentally safe manufacture thereof
US Patent Issued on June 1, 1993
Estimated Patent Expiration Date:
October 8, 2012Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 8, 2012Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractMirrors are formed in an environmentally compatible and substantially pollution-free manner by a sputtering process in which a transparent substrate such as glass has first sputtered upon it a primer layer and then a reflective layer of silver or other bright reflective metal. A barrier layer is provided over the reflective layer to protect the latter from corrosive environments. If the transmittance of the reflective layer is greater than zero percent, the barrier layer includes a different bright reflective metal sufficient to reduce the transmittance of the combined reflective and barrier layers to zero percent. The mirror includes a lead free polymeric protective layer spaced further from the transparent substrate than the barrier layer. The inclusion of zinc pigment in the polymeric coating provides sulfiding protection, and the use of an outer sputtered on film of zinc or zinc oxide provides substantial adhesion thereto of the polymeric coating.Other References
| InventorsAssigneeApplicationNo. 958593 filed on 10/08/1992US Classes:428/623, Adjacent to each other204/192.27, Reflective428/622, More than one such component428/626, Synthetic resin428/627, Boride, carbide or nitride component428/630, Noncrystalline silica or noncrystalline plural-oxide component (e.g., glass, etc.)428/632, Oxide-containing component428/687Surface feature (e.g., rough, mirror)Field of Search428/687, Surface feature (e.g., rough, mirror)428/621, With additional, spatially distinct nonmetal component428/622, More than one such component428/623, Adjacent to each other428/624, Organic component428/626, Synthetic resin428/631, Film (e.g., glaze, etc.)428/632, Oxide-containing component428/633, Plural oxides428/673, Ag-base component428/457, Of metal428/469, Next to metal salt or oxide428/627, Boride, carbide or nitride component428/630, Noncrystalline silica or noncrystalline plural-oxide component (e.g., glass, etc.)359/884, With selective absorption or transparent overcoating359/883, Laminated or layered mirror support359/838, MIRROR359/871, With support204/192.27ReflectiveExaminersPrimary: Zimmerman, John J.Attorney, Agent or FirmUS Patent References1977639, 2123049, 4009947, Reflecting mirrorIssued on: 03/01/1977 Inventor: Nishida , et al.4340646, Multi-layer reflectors Issued on: 07/20/1982 Inventor: Ohno , et al.4563400, Primer for metal films on nonmetallic substrates Issued on: 01/07/1986 Inventor: Criss , et al.4666263, Radiant energy reflector and method for construction thereof Issued on: 05/19/1987 Inventor: Petcavich4690871, Protective overcoat of titanium nitride films Issued on: 09/01/1987 Inventor: Gordon4692389, Stainless steel overcoat for sputtered films Issued on: 09/08/1987 Inventor: Gillery , et al.4707405, Cyanamide salts of non-lead metals as corrosion inhibitive pigments in mirror back coatings Issued on: 11/17/1987 Inventor: Evans , et al.4780372, Silicon nitride protective coatings for silvered glass mirrors Issued on: 10/25/1988 Inventor: Tracy , et al.4880668, Mirror protective composition comprising 2-mercaptothiazoline Issued on: 11/14/1989 Inventor: Hayes, et al.4883721, Multi-layer low emissivity thin film coating Issued on: 11/28/1989 Inventor: Nalepka, et al.4898789, Low emissivity film for automotive heat load reduction Issued on: 02/06/1990 Inventor: Finley4898790, Low emissivity film for high temperature processing Issued on: 02/06/1990 Inventor: Finley4902580, Neutral reflecting coated articles with sputtered multilayer films of metal oxides Issued on: 02/20/1990 Inventor: Gillery4948677High transmittance, low emissivity article and method of preparation Issued on: 08/14/1990 Inventor: Gillery Foreign Patent References
International ClassesB32B 017/06C23C 014/08 C23C 014/18 G02B 005/08 |
