Learn more

OPPRECHT PAUL

Overview
  • Total Patents
    194
About

OPPRECHT PAUL has a total of 194 patent applications. Its first patent ever was published in 1965. It filed its patents most often in Switzerland, Germany and United States. Its main competitors in its focus markets machine tools, surface technology and coating and machines are CHONGQING TONGDA ENERGY EQUIPMENT LTD, SHANGHAI DEMEIKE AUTOMOBILE EQUIPMENT MFG CO LTD and JIANGSU DNCON LASER TECH CO LTD.

Patent filings per year

Chart showing OPPRECHT PAULs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Opprecht Paul 79
#2 Kaul Martin 24
#3 Paul Opprecht 12
#4 Stieger Othmar 10
#5 Opprecht P 10
#6 Weil Wolfgang 8
#7 Pauru Opurehito 7
#8 Fankhauser Hanspeter 6
#9 Opprecht Juerg 5
#10 Vogt Max 5

Latest patents

Publication Filing date Title
EP0136513A1 Method for electrical seam-resistance welding with only one electrode wire, and a welding machine for performing the method, and application of it
EP0122333A1 Method of electrical resistance seam welding utilising one wire electrode only, and welding machine for carrying out the method
EP0116156A1 Method of electrical resistance welding as well as application of the method to barrel manufacturing
EP0102927A1 Arrangement of projections and a method for multiple-projection welding
EP0088231A1 Electric resistance welding process for welding aluminium pieces, and apparatus and electrode therefor
US4495397A Projection for resistance welding of soft metals
DE3134968A1 DEVICE FOR INSIDE APPLICATION OF A PROTECTIVE LAYER ON THE WELDING OR SOLDERING SEAL OF CANNULES
DE3100677A1 HUCKLE FOR ELECTRIC RESISTANT WELDING OF ALUMINUM SHEETS AND METHOD FOR THE PRODUCTION THEREOF
ATA354280A Electric resistant seam welding machine
ES8100920A1 Feeding device in a welding machine for feeding can bodies to electrode rolls
CH645290A5 Apparatus for feeding sheet-metal bodies of cans between the roller electrodes of a resistance welding machine
CH645563A5 Projection welding method for sheet or other thin-walled parts of light metal, in particular aluminium
CH643170A5 Method for preventing the oxidation of the welding seal when resistant roller sealing, and a gas supply device for carrying out the method.
CH637453A5 Device for changing the spacing of successive workpieces in a crank-driven conveying system
DE2839407A1 RESISTANCE WELDING MACHINE FOR SEAM WELDING SHEET METALS
DE2827485A1 DEVICE FOR RESISTANCE ROLLER SEAM WELDING OF SHEET METAL FRAMES
ATA331178A Transportation system for can boards in fully automated resistance welding machines
DE2728741A1 DEVICE FOR APPLYING A PROTECTIVE LAYER TO THE WELD SEAM OF CAN CUP
PH17113A Method and apparatus for seam welding overlapped edges
ES446200A1 Procedure for the welding by semi-automatic or completely automatic electric sewing of plates and soldering machine for resistance for the realization of the procedure (Machine-translation by Google Translate, not legally binding)