Patents by Inventor Shigeto Yanagihara

Shigeto Yanagihara 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).

  • Disposable diaper
    Publication number: 20050154363
    Abstract: A disposable diaper is provided comprising a liquid permeable topsheet, a liquid impermeable backsheet, and a liquid retentive absorbent member interposed between the topsheet and the backsheet. The absorbent member comprises, in admixture, a superabsorbent polymer A having a rate of absorption of 8 g/30 sec/0.3 g or more measured by DW method and a superabsorbent polymer B having a rate of absorption of 5 g/30 sec/0.3 g or less measured by DW method at a polymer A/polymer B weight ratio of 90/10 to 10/90. The admixture optionally further comprises fluff pulp in an amount of from 0 to 30% by weight.
    Type: Application
    Filed: March 10, 2005
    Publication date: July 14, 2005
    Inventors: Masanori Minato, Shigeto Yanagihara, Kenji Ishiguro, Mikio Suzuki, Tetsuya Masuki
  • Disposable diaper and absorbent member used therein
    Patent number: 6891080
    Abstract: A disposable diaper is provided comprising a liquid permeable topsheet, a liquid impermeable backsheet, and a liquid retentive absorbent member interposed between the topsheet and the backsheet. The absorbent member comprises, in admixture, a superabsorbent polymer A having a rate of absorption of 8 g/30 sec/0.3 g or more measured by DW method and a superabsorbent polymer B having a rate of absorption of 5 g/30 sec/0.3 g or less measured by DW method at a polymer A/polymer B weight ratio of 90/10 to 10/90. The admixture optionally further comprises fluff pulp in an amount of from 0 to 30% by weight.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: May 10, 2005
    Assignee: Kao Corporation
    Inventors: Masanori Minato, Shigeto Yanagihara, Kenji Ishiguro, Mikio Suzuki, Tetsuya Masuki
  • Disposable diaper with absorbent member
    Patent number: 6649810
    Abstract: A disposable diaper is provided comprising a liquid permeable topsheet, a liquid impermeable backsheet, and a liquid retentive absorbent member interposed between the two sheets, wherein the disposable diaper has a product basis weight of 50 to 220 g/cm2, and a portion of the disposable diaper where the absorbent member is positioned has a portion having a rate of body fluid absorption of 3.0 g/sec or more and a portion having a saturated body fluid absorption of 75 g/100 cm2 or more.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: November 18, 2003
    Assignee: Kao Corporation
    Inventors: Masanori Minato, Shigeto Yanagihara, Kenji Ishiguro, Mikio Suzuki, Tetsuya Masuki