Patents by Inventor Ian S. Forrest

Ian S. Forrest 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).

  • Solute concentration measurement apparatus
    Patent number: 4934177
    Abstract: Solute concentration measurement apparatus comprises a container (1) for a solution together with an ultrasonic transmitter (2) and receiver (3). A signal from the transmitter (2) passes through the solution to be detected by the receiver (3). A clock (5) and microprocessor (6) determine the speed of sound in the solution and hence the concentration of solute present.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: June 19, 1990
    Assignee: Scottish & Newcastle Breweries plc.
    Inventors: Robin C. Cuthbertson, Ian S. Forrest
  • Method of enhancing the bitterness of beer
    Patent number: 4839189
    Abstract: A method of enhancing the bitterness of beer by oxidation of .beta.-acids obtained from a carbon dioxide extract of hops and introducing the resulting hulupone, preferably at least partially purified, into the beer. The extract contains also .alpha.-acids which are isomerized, separated from the .beta.-acids, and introduced into the beer. The result is a high yield of bitterness-producing material for use in the brewing process.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: June 13, 1989
    Assignee: Scottish & Newcastle Breweries p/c
    Inventors: Ian S. Forrest, James C. Seaton, Michael Moir
  • Method of enhancing the bitterness of beer
    Patent number: 4717580
    Abstract: A method of enhancing the bitterness of beer by oxidation of .beta.-acids obtained from a carbon dioxide extract of hops and introducing the resulting hulupone, preferably at least partially purified, into the beer. The extract contains also .alpha.-acids which are isomerized, separated from the .beta.-acids, and introduced into the beer. The result is a high yield of bitterness-producing material for use in the brewing process.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: January 5, 1988
    Assignee: Scottish & Newcastle Breweries plc
    Inventors: Ian S. Forrest, James C. Seaton, Michael Moir