Robert P. Schaefer has been granted 8 US patents while listed as an inventor at RTX (Raytheon) . The first was granted in 1988 and the most recent in July 2017. Robert P. Schaefer ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Robert P. Schaefer in Town of East Hartford, CT, US.
Patents per Year Patents granted per year, 1988 to 2017 Bar chart with a peak of 2 patents in 1989. peak 2 1988: 1 patents 1988 1989: 2 patents 1989 1998: 1 patents 1998 2007: 1 patents 2007 2013: 2 patents 2013 2017: 1 patents 2017
Issued Patents All Time
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Showing 1–8 of 8 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
9694440 Support collar geometry for linear friction welding James J. Moor , Herbert A. Chin , Greg Czeladko , Gene A. Danko , Andrew Leo Haynes +3 more 2017-07-04
8613138 Repair of integrally bladed rotors Herbert A. Chin , Eberhardt Privitzer , Wangen Lin , Billie W. Bunting , James J. Moor +4 more 2013-12-24
$53,110,000
8479391 Consumable collar for linear friction welding of blade replacement for damaged integrally bladed rotors Herbert A. Chin , Eberhardt Privitzer , Wangen Lin , Billie W. Bunting , James J. Moor +4 more 2013-07-09
$29,442,000
7244320 Methods for repairing gas turbine engine components David R. Malley , Carl E. Kelly 2007-07-17
$74,224,000
5806751 Method of repairing metallic alloy articles, such as gas turbine engine components William F. Bender , Matthew J. Arnold 1998-09-15
$6,891,000
4851188 Method for making a turbine blade having a wear resistant layer sintered to the blade tip surface Walter Gustafson , David A. Rutz , Kenneth Taylor 1989-07-25
$3,744,000
4802828 Turbine blade having a fused metal-ceramic tip David A. Rutz , Edward Lee , Edward L. Johnson 1989-02-07
$6,513,000
4735656 Abrasive material, especially for turbine blade tips David A. Rutz , Edward Lee , Edward J. Johnson 1988-04-05
$8,925,000
