Patents by Inventor John Leet

John Leet 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).

  • Patent number: 6961552
    Abstract: The radio receiver includes a low noise amplifier that amplifies a received signal to one of three different gain settings. One gain setting is maximum amplification, a second gain setting is 6 dB below maximum amplification and a third gain setting is 32 dB below maximum amplification. In the case of the third setting, the low noise amplifier actually attenuates the received signal by 6 dB. The radio receiver includes a pair of received signal strength indicators that provide received signal strength indications to logic circuitry. Responsive to the received signal strength indications, the logic circuitry generates control commands to the low noise amplifier to prompt it to amplify at one of the three specified levels. Generally, if the received signal has a gain level that exceeds a specified threshold, the low noise amplifier actually attenuates the received signal; otherwise, the level of amplification that is actually provided is a function of the presence of intermodulation interference.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: November 1, 2005
    Assignee: Broadcom Corporation
    Inventors: Hooman Darabi, John Leete
  • Publication number: 20030181180
    Abstract: The radio receiver includes a low noise amplifier that amplifies a received signal to one of three different gain settings. One gain setting is maximum amplification, a second gain setting is 6 dB below maximum amplification and a third gain setting is 32 dB below maximum amplification. In the case of the third setting, the low noise amplifier actually attenuates the received signal by 6 dB. The radio receiver includes a pair of received signal strength indicators that provide received signal strength indications to logic circuitry. Responsive to the received signal strength indications, the logic circuitry generates control commands to the low noise amplifier to prompt it to amplify at one of the three specified levels. Generally, if the received signal has a gain level that exceeds a specified threshold, the low noise amplifier actually attenuates the received signal; otherwise, the level of amplification that is actually provided is a function of the presence of intermodulation interference.
    Type: Application
    Filed: May 3, 2002
    Publication date: September 25, 2003
    Inventors: Hooman Darabi, John Leete
  • Publication number: 20020055465
    Abstract: Novel nocathiacin derivatives have been prepared by both biotransformation and chemical methods. A novel nocathiacin derivative, nocathiacin IV, was prepared by either incubation of protease from Streptomyces griseus (Sigma, Cat# P5147) with nocathiacin I in DMF or by chemical methods. Fermentation of Actinoplanes sp. ATCC 53771 in the presence of nocathiacin IV produces a new compound nocathiacin IV 6-deoxyglucoside. Both nocathiacin IV and nocathiacin IV 6-deoxyglucoside have broad spectrum antibiotic activity against Gram-positive bacteria and have in vivo efficacy in animals.
    Type: Application
    Filed: July 31, 2001
    Publication date: May 9, 2002
    Inventors: Wenying Li, John Leet, Xiaohua Huang, Kin Sing Lam, Alicia Regueiro-Ren