Patents by Inventor Akiyoshi Oda

Akiyoshi Oda 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).

  • Gas-liquid contact device, distillation device, and heat exchange device
    Patent number: 10076722
    Abstract: Provided is an NMP recovery system 1 for causing NMP-containing gas to contact NMP-absorbing water, including: fillers (10A) to (10D) that are permeable to the water and hold the water, wherein the permeated water moves according to gravity to flow out from the fillers; an NMP-containing gas distribution unit (30) for distributing the NMP-containing gas so as to cause the NMP-containing gas to contact the water held by the fillers (10A) to (10D); and a water distribution unit (40) for distributing the water so as to make the water permeate through the fillers (10A) to (10D). In the fillers (10A) to (10D), the NMP-containing gas is made to contact the NMP-absorbing water. Accordingly, NMP in the NMP-containing gas is absorbed in the water, so that the NMP is separated from the NMP-containing gas.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: September 18, 2018
    Assignee: Nippon Refine Co., Ltd.
    Inventors: Tomokiyo Takeyama, Akiyoshi Oda, Yasuhito Kawase, Taijun Kawase
  • GAS-LIQUID CONTACT DEVICE, DISTILLATION DEVICE, AND HEAT EXCHANGE DEVICE
    Publication number: 20150136582
    Abstract: Provided is an NMP recovery system 1 for causing NMP-containing gas to contact NMP-absorbing water, including: fillers (10A) to (10D) that are permeable to the water and hold the water, wherein the permeated water moves according to gravity to flow out from the fillers; an NMP-containing gas distribution unit (30) for distributing the NMP-containing gas so as to cause the NMP-containing gas to contact the water held by the fillers (10A) to (10D); and a water distribution unit (40) for distributing the water so as to make the water permeate through the fillers (10A) to (10D). In the fillers (10A) to (10D), the NMP-containing gas is made to contact the NMP-absorbing water. Accordingly, NMP in the NMP-containing gas is absorbed in the water, so that the NMP is separated from the NMP-containing gas.
    Type: Application
    Filed: December 7, 2012
    Publication date: May 21, 2015
    Inventors: Tomokiyo Takeyama, Akiyoshi Oda, Yasuhito Kawase, Taijun Kawase