David B. Wittry Patents
6,498,830
Wittry December 24, 2002
Method and apparatus for fabricating curved crystal x-ray optics
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=6,498,830.PN.&OS=PN/6,498,830&RS=PN/6,498,830
6,236,710
Wittry May 22, 2001
Curved crystal x-ray optical device and method of fabrication
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=6,236,710.PN.&OS=PN/6,236,710&RS=PN/6,236,710
5,892,809
Wittry April 6, 1999
Simplified system for local excitation by monochromatic x-rays
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=5,892,809.PN.&OS=PN/5,892,809&RS=PN/5,892,809
4,599,741
System for local X-ray excitation by monochromatic X-rays
http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4599741
3,927,319
Wittry December 16, 1975
Crystal for X-ray crystal spectrometer
http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F3927319
4,807,268
Wittry February 21, 1989
Scanning monochrometer crystal and method of formation
http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4807268
4,882,780
Wittry November 21, 1989
Scanning monochromator crystal and related method
http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4882780
5,685,269
Wittry November 11, 1997
High speed rotary engine and ignition system
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=5,685,269.PN.&OS=PN/5,685,269&RS=PN/5,685,269
5,433,179
Wittry July 18, 1995
Rotary engine with variable compression ratio
http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F5433179
5,622,149
Wittry April 22, 1997
High-power rotary engine with varaiable compression ratio
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=5,622,149.PN.&OS=PN/5,622,149&RS=PN/5,622,149
5,537,973
Wittry July 23, 1996
Rotary engine with glow ignition system
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=5,537,973.PN.&OS=PN/5,537,973&RS=PN/5,537,973
5,546,815
Wittry August 20, 1996
Digital wind-speed meter
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=5,546,815.PN.&OS=PN/5,546,815&RS=PN/5,546,815
5,127,028
Wittry June 30, 1992
Diffractord with doubly curved surface steps
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=5,127,028.PN.&OS=PN/5,127,028&RS=PN/5,127,028
4,847,502
Bradley , et al. July 11, 1989
Inventors: Bradley; James G. (Altadena, CA), Conley; Joseph M. (La Canada, CA), Wittry; David B. (Pasadena, CA)
Dual cathode system for electron beam instruments
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=4,847,502.PN.&OS=PN/4,847,502&RS=PN/4,847,502
4,199,383
Wittry April 22, 1980
Method of making a photovoltaic cell employing a PbO-SnO heterojunction
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=4,199,383.PN.&OS=PN/4,199,383&RS=PN/4,199,383
4,194,233
Jones , et al. March 18, 1980
Inventors: Jones; Addison B. (La Mirada, CA), Wittry; David B. (Pasadena, CA)
Mask apparatus for fine-line lithography
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4,194,123
Wittry March 18, 1980
Lithographic apparatus
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=4,194,123.PN.&OS=PN/4,194,123&RS=PN/4,194,123
4,165,472
Wittry August 21, 1979
Rotating anode x-ray source and cooling technique therefor
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4,099,199
Wittry July 4, 1978
Photovoltaic cell employing a PbO-SnO heterojunction
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=4,099,199.PN.&OS=PN/4,099,199&RS=PN/4,099,199