DW

Douglas A. Welch

RTX (Raytheon): 6 patents #1,992 of 15,912Top 15%
OC Octel Communications: 1 patents #24 of 40Top 60%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 San Jose, CA: #7,614 of 32,062 inventorsTop 25%
🗺 California: #73,997 of 386,348 inventorsTop 20%
Overall (All Time): #658,062 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
7517184 Low deflection fan case cotainment fabric Mark W. Costa, Jan B. Kowza, Curt R. Hetherington, Wendy P. Lopardi 2009-04-14
6846159 Chamfered attachment for a bladed rotor Douglas J. Zabawa, William R. Graves 2005-01-25
6146099 Frangible fan blade Robert H. Zipps, Reginald H. Spaulding, Edward S. Todd, Robert F. Kasprow, Herman C. Klapproth +2 more 2000-11-14
6059524 Penetration resistant fan casing for a turbine engine Mark W. Costa, Andrew Foose, Nathan D. Korn, Jan B. Kowza, Wendy P. Lopardi 2000-05-09
6048174 Impact resistant hollow airfoils Marc Samit, Paul W. Duesler, Patrick D. Markham, Allan R. Penda 2000-04-11
5836744 Frangible fan blade Robert H. Zipps, Reginald H. Spaulding, Edward S. Todd, Robert F. Kasprow, Herman C. Klapproth +2 more 1998-11-17
5476363 Method and apparatus for reducing stress on the tips of turbine or compressor blades Melvin Freling, Gary A. Gruver, Joseph Parkos 1995-12-19
4873718 Feature telephone integration device Paul M. Barnett, Duncan J. S. MacMillan, Jr. 1989-10-10