Inventor
YOSHIKAWA SHUNSAKU
JP36 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIKAWA SHUNSAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SENJU METAL INDUSTRY CO
30 patentsUS10717158B2Jul 21, 2020
Solder alloy for preventing Fe erosion, resin flux cored solder, wire solder, resin flux cored wire solder, flux coated solder, solder joint and soldering method
SENJU METAL INDUSTRY CO2 citations72
US10213879B2Feb 26, 2019
Solder alloy
SENJU METAL INDUSTRY CO2 citations71
US9837757B2Dec 5, 2017
Lead-free solder alloy and in-vehicle electronic circuit
SENJU METAL INDUSTRY CO2 citations69
US12569941B2Mar 10, 2026
Solder alloy, solder paste, solder ball, solder preform, solder joint, in-vehicle electronic circuit, ECU electronic circuit, in-vehicle electronic circuit device and ECU electronic circuit device
SENJU METAL INDUSTRY CO1 citations62
US11123824B2Sep 21, 2021
Solder alloy
SENJU METAL INDUSTRY CO1 citations62
US11577344B2Feb 14, 2023
Solder alloy
SENJU METAL INDUSTRY CO1 citations61
US11241760B2Feb 8, 2022
Solder alloy, solder paste, solder ball, resin flux-cored solder and solder joint
SENJU METAL INDUSTRY CO0 citations61
US12576463B2Mar 17, 2026
Lead-free and antimony-free solder alloy, solder ball, and solder joint
SENJU METAL INDUSTRY CO0 citations60
US12447564B2Oct 21, 2025
Solder alloy, solder ball, and solder joint
SENJU METAL INDUSTRY CO0 citations60
US12383987B2Aug 12, 2025
Lead-free and antimony-free solder alloy, solder ball, ball grid array, and solder joint
SENJU METAL INDUSTRY CO0 citations60
US12377500B2Aug 5, 2025
Lead-free and antimony-free solder alloy, solder ball, and solder joint
SENJU METAL INDUSTRY CO0 citations60
US12109653B2Oct 8, 2024
Solder alloy, solder ball, solder paste, and solder joint
SENJU METAL INDUSTRY CO1 citations60
US12053843B2Aug 6, 2024
Solder alloy, solder paste, solder ball, solder preform, solder joint, in-vehicle electronic circuit, ECU electronic circuit, in-vehicle electronic circuit device and ECU electronic circuit device
SENJU METAL INDUSTRY CO1 citations60
US11633815B2Apr 25, 2023
Solder paste
SENJU METAL INDUSTRY CO1 citations60
US10500680B2Dec 10, 2019
Solder alloy, solder ball, and solder joint
SENJU METAL INDUSTRY CO1 citations60
US10343238B2Jul 9, 2019
Lead-free solder alloy
SENJU METAL INDUSTRY CO1 citations60
US11167379B2Nov 9, 2021
Solder alloy, solder ball, solder preform, solder paste and solder joint
SENJU METAL INDUSTRY CO1 citations59
US10967464B2Apr 6, 2021
Solder alloy, solder paste, and solder joint
SENJU METAL INDUSTRY CO0 citations59
US12583061B2Mar 24, 2026
Solder alloy, solder paste, and solder joint
SENJU METAL INDUSTRY CO0 citations58
US11772204B2Oct 3, 2023
Preform solder and method of manufacturing the same, and method of manufacturing solder joint
SENJU METAL INDUSTRY CO0 citations57
US11628520B2Apr 18, 2023
Preform solder and method of manufacturing the same, and method of manufacturing solder joint
SENJU METAL INDUSTRY CO1 citations57
US12583060B2Mar 24, 2026
Solder alloy, solder ball and solder joint
SENJU METAL INDUSTRY CO0 citations56
US11992902B2May 28, 2024
Solder alloy and solder joint
SENJU METAL INDUSTRY CO0 citations52
US12179291B2Dec 31, 2024
Method for step-soldering
SENJU METAL INDUSTRY CO0 citations50
US9808890B2Nov 7, 2017
Solder alloy
SENJU METAL INDUSTRY CO0 citations50
US11607753B2Mar 21, 2023
Solder alloy, cast article, formed article, and solder joint
SENJU METAL INDUSTRY CO0 citations49
US10137536B2Nov 27, 2018
Sn-Cu-based lead-free solder alloy
SENJU METAL INDUSTRY CO0 citations48
US10350712B2Jul 16, 2019
Solder paste
SENJU METAL INDUSTRY CO0 citations44
US9987710B2Jun 5, 2018
Solder paste
SENJU METAL INDUSTRY CO0 citations44
US10076808B2Sep 18, 2018
Lead-free solder alloy
SENJU METAL INDUSTRY CO0 citations40