Coating processes – Optical element produced – Polarizer – windshield – optical fiber – projection screen – or...
Patent
1997-09-16
1999-08-24
Bell, Janyce
Coating processes
Optical element produced
Polarizer, windshield, optical fiber, projection screen, or...
404 14, 264 15, 427204, 427205, 427215, 427219, 427242, B05D 506, B22D 1101, C01F 1100
Patent
active
059422807
ABSTRACT:
A method of making a ceramic retroreflective element having enhanced strength and increased retained reflectivity. The method of the present invention comprises forming retroreflective elements by the following steps:
REFERENCES:
patent: 2043414 (1936-06-01), Korff
patent: 2440584 (1948-04-01), Heltzer et al.
patent: 3043196 (1962-07-01), Palmquist et al.
patent: 3171827 (1965-03-01), DeVries et al.
patent: 3175935 (1965-03-01), Vanstrum
patent: 3252376 (1966-05-01), DeVries
patent: 3254563 (1966-06-01), DeVries et al.
patent: 3274888 (1966-09-01), Vanstrum et al.
patent: 3279316 (1966-10-01), Penton et al.
patent: 3292507 (1966-12-01), Vanstrum
patent: 3418896 (1968-12-01), Rideout
patent: 3486952 (1969-12-01), Vanstrum et al.
patent: 3499371 (1970-03-01), Jonnes et al.
patent: 3556637 (1971-01-01), Palmquist
patent: 3584932 (1971-06-01), Terrill et al.
patent: 3709706 (1973-01-01), Sowman
patent: 3849351 (1974-11-01), Jorgensen
patent: 3891451 (1975-06-01), Okazaki et al.
patent: 3935158 (1976-01-01), Watanabe
patent: 4035059 (1977-07-01), DeMaster
patent: 4069281 (1978-01-01), Eigenmann
patent: 4072403 (1978-02-01), Eigenmann
patent: 4166147 (1979-08-01), Lange et al.
patent: 4203878 (1980-05-01), Bauer
patent: 4367919 (1983-01-01), Tung et al.
patent: 4388359 (1983-06-01), Ethen et al.
patent: 4521129 (1985-06-01), Krech et al.
patent: 4564556 (1986-01-01), Lange
patent: 4652172 (1987-03-01), Eigenmann
patent: 4758469 (1988-07-01), Lange
patent: 4772155 (1988-09-01), Dinitz
patent: 4772511 (1988-09-01), Wood et al.
patent: 4875798 (1989-10-01), May
patent: 4937127 (1990-06-01), Haenggi et al.
patent: 4983458 (1991-01-01), Dejaiffe
patent: 5053253 (1991-10-01), Haenggi et al.
patent: 5069577 (1991-12-01), Murphy
patent: 5094902 (1992-03-01), Haenggi et al.
patent: 5124178 (1992-06-01), Haenggi et al.
patent: 5268789 (1993-12-01), Bradshaw
patent: 5310278 (1994-05-01), Kaczmarczik et al.
patent: 5417515 (1995-05-01), Hachey et al.
Vedam et al., "Retroreflection from Spherical Glass Beads in Highway Pavement Markings. 2: Diffuse Reflection (a first approximation calculation)," Applied Optics, vol. 17, No. 12, pp. 1859-1869 (Jun. 15 1978).
ANSI Standard PH2.17-1985 Density Measurements--Geometric Conditions for Reflection Density (Jul. 3 1985).
ASTM Standard E809-94A, Standard Practice for Measuring Photometric Characteristics of Retroreflectors (no date).
D. J. Godfrey. "Fabrication, Formulation, Mechanical Properties, and Oxidation of Sintered Si.sub.3 N.sub.4 Ceramics Using Disc Specimens," Mat. Sci. and Technology, vol. 1, pp. 510-515 (Jul. 1985).
U.S. Defensive Publication No. T987003 (Oct. 2 1979).
Humpal Kathleen Marie
Mathers James Patrick
3M Innovative Properties Company
Bell Janyce
Fagan Lisa M.
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