Patents by Inventor Syuta Akatsuka

Syuta Akatsuka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Flux and solder paste using the same
    Patent number: 11298780
    Abstract: Provided is flux containing rosin-based resin, a solvent, a thixotropic agent and an activator. The thixotropic agent includes any or both of hardened castor oil and bisamide-based thixotropic agent. The contents of the hardened castor oil and the bisamide-based thixotropic agent are respectively within the range of 4 wt. % or more and 10 wt. % or less and the range of 1 wt. % or more and 5 wt. % or less based on the total weight of the flux. The contents of the thixotropic agent are within the range of 5 wt. % or more and 15 wt. % or less based on the total weight of the flux. The activator includes hydrohalide, a halogenated aliphatic compound and an imidazole compound. The contents of the halogen in the flux are within the range of 9000 ppm or more and 50000 ppm or less.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 12, 2022
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Hiroaki Kawamata, Hayato Kaise, Syuta Akatsuka, Kengo Ohta, Sakie Okada
  • Flux and Solder Paste Using the Same
    Publication number: 20210299799
    Abstract: Provided is flux containing rosin-based resin, a solvent, a thixotropic agent and an activator. The thixotropic agent includes any or both of hardened caster oil and bisamide-based thixotropic agent. The contents of the hardened caster oil and the bisamide-based thixotropic agent are respectively within the range of 4 wt. % or more and 10 wt. % or less and the range of 1 wt. % or more and 5 wt. % or less based on the total weight of the flux. The contents of the thixotropic agent are within the range of 5 wt. % or more and 15 wt. % or less based on the total weight of the flux. The activator includes hydrohalide, a halogenated aliphatic compound and an imidazole compound. The contents of the halogen in the flux are within the range of 9000 ppm or more and 50000 ppm or less.
    Type: Application
    Filed: March 26, 2021
    Publication date: September 30, 2021
    Inventors: Hiroaki Kawamata, Hayato Kaise, Syuta Akatsuka, Kengo Ohta, Sakie Okada
  • Flux and Solder Paste Using the Same
    Publication number: 20210213570
    Abstract: Provided is flux used for soldering and solder paste using the same. The flux used for an air-dispensing method contains a solvent, a high viscosity solvent of 1, 2, 6-hexantriol and isobornyl cyclohexanol, and a thixotropic agent but does not contain rosin. The flux used for the air-dispensing method and a jet-dispensing method contains a solvent, a high viscosity solvent of 1, 2, 6-hexantriol and isobornyl cyclohexanol, a thixotropic agent and rosin.
    Type: Application
    Filed: January 11, 2021
    Publication date: July 15, 2021
    Inventors: Yusuke Kawano, Hayato Kaise, Syuta Akatsuka, Kengo Ohta, Sakie Okada