Patents by Inventor Youichiroh Hosokawa

Youichiroh Hosokawa 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).

  • Process for producing crystalline nucleus and method of screening crystallization conditions
    Patent number: 7247203
    Abstract: The present invention relates to a process for producing high-quality crystals of protein or organic substances easily and efficiently. A solution of protein or an organic substance is prepared and then is cooled slowly to be supersaturated to a low degree. This supersaturated solution is irradiated with a femtosecond laser 10. A local explosion phenomenon occurs at the focal point of the laser and thereby a crystalline nucleus is generated. A high-quality crystal is obtained when a crystal is grown on the crystalline nucleus over a long period of time. The femtosecond laser to be used herein can be a titanium:sapphire laser having a wavelength of 800 nm, a duration of 120 fs, a frequency of 1 kHz, and an output of 400 mW.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: July 24, 2007
    Assignee: Osaka Industrial Promotion Organization
    Inventors: Takatomo Sasaki, Yusuke Mori, Masashi Yoshimura, Hiroaki Adachi, Hiroshi Masuhara, Youichiroh Hosokawa, Kazufumi Takano
  • Process for producing crystalline nucleus and method of screening crystallization conditions
    Publication number: 20050241568
    Abstract: The present invention relates to a process for producing high-quality crystals of protein or organic substances easily and efficiently. A solution of protein or an organic substance is prepared and then is cooled slowly to be supersaturated to a low degree. This supersaturated solution is irradiated with a femtosecond laser 10. A local explosion phenomenon occurs at the focal point of the laser and thereby a crystalline nucleus is generated. A high-quality crystal is obtained when a crystal is grown on the crystalline nucleus over a long period of time. The femtosecond laser to be used herein can be a titanium:sapphire laser having a wavelength of 800 nm, a duration of 120 fs, a frequency of 1 kHz, and an output of 400 mW.
    Type: Application
    Filed: August 25, 2003
    Publication date: November 3, 2005
    Applicant: Osaka Industrial Promotion Organization
    Inventors: Takatomo Sasaki, Yusuke Mori, Masashi Yoshimura, Hiroaki Adachi, Hiroshi Masuhara, Youichiroh Hosokawa, Kazufumi Takano