Assignee
THERMATOOL CORP
40 patents
Top patents by PatentIndex Score
US4197441AApr 8, 1980
High frequency induction welding with return current paths on surfaces to be heated
THERMATOOL CORP64 citations96
US5571437ANov 5, 1996
Induction welding of tubing with multiple induction coils
THERMATOOL CORP44 citations92
US5902506AMay 11, 1999
Matching apparatus for connecting high frequency solid state electrical power generator to a load
THERMATOOL CORP40 citations91
US7184279B2Feb 27, 2007
Solid state switching circuit
THERMATOOL CORP21 citations89
US4326583AApr 27, 1982
Heat exchanger panels
THERMATOOL CORP27 citations82
US4136272AJan 23, 1979
Method of manufacturing heat exchange panels
THERMATOOL CORP21 citations82
US4278868AJul 14, 1981
Methods and apparatus for heating metal parts with magnetically driven travelling electric arc
THERMATOOL CORP21 citations81
US4916278AApr 10, 1990
Severing metal strip with high frequency electrical current
THERMATOOL CORP16 citations73
US4362921ADec 7, 1982
Welding of fins to tubing
THERMATOOL CORP12 citations73
US4234776ANov 18, 1980
Method of producing areas of alloy metal on a metal part using electric currents
THERMATOOL CORP16 citations73
US4219722AAug 26, 1980
Methods and apparatus for heating metal parts with magnetically driven travelling electric arc
THERMATOOL CORP11 citations73
US4215259AJul 29, 1980
Surface hardening of metals using electric currents
THERMATOOL CORP12 citations73
US4081648AMar 28, 1978
High frequency in-line, electrical welding apparatus for small diameter metal tubing
THERMATOOL CORP8 citations73
US5954985ASep 21, 1999
Matching apparatus for connecting high frequency solid state electrical power
THERMATOOL CORP15 citations72
US4845326AJul 4, 1989
Apparatus and method for electrically butt welding of skelp edge faces which have been preheated
THERMATOOL CORP12 citations71
US4112566ASep 12, 1978
Method of manufacturing heat exchange panels
THERMATOOL CORP9 citations71
US10024735B2Jul 17, 2018
Heat energy sensing and analysis for welding processes
THERMATOOL CORP4 citations68
US4426998AJan 24, 1984
Solar collector unit for roof or wall mounting
THERMATOOL CORP12 citations68
US10405378B2Sep 3, 2019
High frequency power supply system with closely regulated output for heating a workpiece
THERMATOOL CORP5 citations67
US4332373AJun 1, 1982
Solder pot with replenisher and skimmer
THERMATOOL CORP15 citations67
US4256252AMar 17, 1981
Soldering apparatus
THERMATOOL CORP16 citations67
US3937914AFeb 10, 1976
Method and apparatus for manufacturing welded metal tubes of finite length
THERMATOOL CORP8 citations65
US8986600B2Mar 24, 2015
Spray quench systems for heat treated metal products
THERMATOOL CORP2 citations62
US4508949AApr 2, 1985
Method and apparatus for welding tapered metal poles
THERMATOOL CORP2 citations62
US4241284ADec 23, 1980
Electrical contact apparatus for high frequency welding
THERMATOOL CORP5 citations62
US4192984AMar 11, 1980
Embedment of hard particles in a metal surface
THERMATOOL CORP2 citations62
US7683288B2Mar 23, 2010
System and method of computing the operating parameters of a forge welding machine
THERMATOOL CORP3 citations61
US4233484ANov 11, 1980
High frequency current welding of metal strip to a metal part
THERMATOOL CORP5 citations61
US4207451AJun 10, 1980
Multi-layered electrical induction coil subjected to large forces
THERMATOOL CORP19 citations60
US6037556AMar 14, 2000
High frequency contact welding apparatus with skewed contacts
THERMATOOL CORP10 citations59
US4339654AJul 13, 1982
Methods for the manufacture of heat exchanger panels
THERMATOOL CORP4 citations59
US11013072B2May 18, 2021
Induction coil with dynamically variable coil geometry
THERMATOOL CORP0 citations58
US10701769B2Jun 30, 2020
Induction coil with dynamically variable coil geometry
THERMATOOL CORP1 citations58
US11784576B2Oct 10, 2023
High frequency power supply system with closely regulated output for heating a workpiece
THERMATOOL CORP0 citations56
US8980164B2Mar 17, 2015
Spray quench systems for heat treated metal products
THERMATOOL CORP1 citations51
US4277871AJul 14, 1981
Heat exchanger panels and method of manufacture
THERMATOOL CORP1 citations51
US9924567B2Mar 20, 2018
Induction coil with dynamically variable coil geometry
THERMATOOL CORP1 citations48
US10855194B2Dec 1, 2020
High frequency power supply system with closely regulated output for heating a workpiece
THERMATOOL CORP0 citations46
US4336643AJun 29, 1982
Method for the processing of heat exchanger, tube-strip elements
THERMATOOL CORP5 citations46
US4287947ASep 8, 1981
Solar panel elements and method of manufacture thereof
THERMATOOL CORP0 citations37