Patents by Inventor Daisuke Sohma

Daisuke Sohma 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).

  • Coated solder spheres and method for producing the same
    Patent number: 6387499
    Abstract: Solder spheres which can avoid blackening during transportation have a substantially uniform coating of a lubricant on the surfaces thereof. They are produced by dipping freshly prepared solder spheres in a lubricant solution with a concentration of from 10 ppm to 1000 ppm followed by collection of the spheres and drying. The lubricant is preferably selected from an aliphatic hydrocarbon lubricant, a higher fatty alcohol or acid lubricant, a fatty acid amide lubricant, a metal soap lubricant, a fatty acid ester lubricant, a fluoroplastic lubricant, a silicone lubricant, and a combination thereof.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: May 14, 2002
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Daisuke Sohma, Takahiro Roppongi
  • Coated solder spheres and method for producing the same
    Patent number: RE45537
    Abstract: Solder spheres which can avoid blackening during transportation have a substantially uniform coating of a lubricant on the surfaces thereof. They are produced by dipping freshly prepared solder spheres in a lubricant solution with a concentration of from 10 ppm to 1000 ppm followed by collection of the spheres and drying. The lubricant is preferably selected from an aliphatic hydrocarbon lubricant, a higher fatty alcohol or acid lubricant, a fatty acid amide lubricant, a metal soap lubricant, a fatty acid ester lubricant, a fluoroplastic lubricant, a silicone lubricant, and a combination thereof.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: June 2, 2015
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Daisuke Sohma, Takahiro Roppongi