Patents by Inventor Bun Hong Lai

Bun Hong Lai 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).

  • Cryogenic trap system
    Patent number: 10352311
    Abstract: The cryogenic trapping system traps organic arsenicals within a centrally-positioned cryotrap body and allows inorganic arsenical to flow through the cryotrap body. As a hydride gas is directed into the central cryotrap body, the gas is cooled by a pair of Peltier units that sandwich the cryotrap body so that the cold side of each of the Peltier units abuts the cryotrap body. The hot side of each Peltier unit abuts a heat exchanger—which cools the Peltier unit. In the preferred embodiment, organic arsenicals are trapped in a sorbent bed within the cryotrap body.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: July 16, 2019
    Assignee: The United States of America, as represented by The Secretary of Agriculture
    Inventors: Guoying Chen, Bun Hong Lai
  • CRYOGENIC TRAP SYSTEM
    Publication number: 20170350379
    Abstract: The cryogenic trapping system traps organic arsenicals within a centrally-positioned cryotrap body and allows inorganic arsenical to flow through the cryotrap body. As a hydride gas is directed into the central cryotrap body, the gas is cooled by a pair of Peltier units that sandwich the cryotrap body so that the cold side of each of the Peltier units abuts the cryotrap body. The hot side of each Peltier unit abuts a heat exchanger—which cools the Peltier unit. In the preferred embodiment, organic arsenicals are trapped in a sorbent bed within the cryotrap body.
    Type: Application
    Filed: June 2, 2016
    Publication date: December 7, 2017
    Inventors: Guoying Chen, Bun Hong Lai