Patents by Inventor Ryuji Saito

Ryuji Saito 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).

  • Publication number: 20130261334
    Abstract: A process for producing acetic acid by: a reaction step for continuously allowing methanol to react with carbon monoxide in the presence of a catalyst system comprising a metal catalyst, an ionic iodide, and methyl iodide in a carbonylation reactor, a flash distillation step for continuously feeding a flasher with a reaction mixture from the reactor and evaporating a volatile component at least containing product acetic acid, methyl acetate, and methyl iodide by flash distillation to separate the volatile component and a liquid catalyst mixture at least containing the metal catalyst and the ionic iodide, and an acetic acid collection step for separating a stream containing acetic acid from the volatile component to collect acetic acid; wherein, in the flash distillation step, the flash distillation is conducted under the condition that the concentration of methyl acetate in the liquid catalyst mixture is not less than 0.6% by weight.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 3, 2013
    Applicant: DAICEL CORPORATION
    Inventors: Masahiko Shimizu, Ryuji Saito, Hiroyuki Miura, Takashi Ueno, Hidehiko Nakajima
  • Publication number: 20120071808
    Abstract: A patch material which includes a backing material having a water-vapor permeability of 3,000 g/m2┬Ěday or more and an adhesive layer having a water-vapor permeability of 5,000 g/m2┬Ěday or more, wherein the adhesive layer comprises a polyurethane adhesive obtained by reacting (i) an active hydrogen compound having a number-average molecular weight of 5,000 or more and an average number of functional groups of 2 or more, and having a polyoxyalkylene structure, (ii) an active hydrogen compound having a number-average molecular weight of 1,500 to 5,000 and an average number of functional groups of 1, and having a polyoxyalkylene structure, and (iii) an organic polyisocyanate, wherein an average number of functional groups of all active hydrogen compounds used for obtaining the adhesive is 2 to 2.6, and the content of ethylene oxide units of all active hydrogen compounds in the adhesive is 3 to 8% by weight.
    Type: Application
    Filed: May 28, 2010
    Publication date: March 22, 2012
    Inventors: Eisaku Sato, Ryuji Saito, Kazutoshi Haraguchi, Yoshiko Koike, Tomonori Ikai