SB

Seigfried Birkle

SA Siemens Aktiengesellschaft: 1 patents #104 of 616Top 20%
📍 Höchstadt an der Aisch, DE: #2 of 6 inventorsTop 35%
Overall (1994): #164,470 of 165,921Top 100%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5360693 Positive o-quinone diazide photoresist containing base copolymer utilizing monomer having anhydride function and further monomer that increases etch resistance Michael Sebald, Recai Sezi, Rainer Leuschner, Hellmut Ahhe 1994-11-01