Patents by Inventor Michael John Holder

Michael John Holder 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).

  • Chemical absorbent
    Patent number: 10500541
    Abstract: A chemical absorbent comprising a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of a Group I metal-containing zeolite. The chemical absorbent is substantially free of hydroxides of Group I metals.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: December 10, 2019
    Assignee: Intersurgical AG
    Inventor: Michael John Holder
  • CHEMICAL ABSORBENT
    Publication number: 20170320011
    Abstract: A chemical absorbent comprising a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of a Group I metal-containing zeolite. The chemical absorbent is substantially free of hydroxides of Group I metals.
    Type: Application
    Filed: October 26, 2015
    Publication date: November 9, 2017
    Inventor: Michael John HOLDER
  • RESPIRATORY CIRCUITS
    Publication number: 20090120440
    Abstract: A cartridge (120) is disclosed that is suitable for incorporation within a respiratory circuit. The cartridge (120) is adapted to contain a material for treating respiratory gases and comprises an inlet (122) and an outlet such that respiratory gases flow, in use, through the interior of the cartridge (120) and interact with the material. The cartridge (120) includes means for guiding the respiratory gas transversely relative to its direction of flow through the interior of the cartridge (120).
    Type: Application
    Filed: November 24, 2005
    Publication date: May 14, 2009
    Applicant: INTERSURGICAL AG
    Inventors: Alan Pittaway, Michael John Holder
  • Chemical absorbent
    Patent number: 7476641
    Abstract: A chemical absorbent comprises a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of silica, the chemical absorbent being substantially free of Group I metal ions. The chemical absorbent is particularly useful in low flow or closed circuit anaesthesia, and is advantageous in that it does not react with volatile anaesthetic agents in such a way as to cause the build up of toxic substances within an anaesthetic breathing circuit.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: January 13, 2009
    Assignee: Intersurgical AG
    Inventor: Michael John Holder
  • Chemical absorbent
    Publication number: 20040053782
    Abstract: A chemical absorbent comprises a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of silica, the chemical absorbent being substantially free of Group I metal ions. The chemical absorbent is particularly useful in low flow or closed circuit anaesthesia, and is advantageous in that it does not react with volatile anaesthetic agents in such a way as to cause the build up of toxic substances within an anaesthetic breathing circuit.
    Type: Application
    Filed: October 14, 2003
    Publication date: March 18, 2004
    Inventor: Michael John Holder
  • Process for the manufacture of chemical absorbents and chemical absorbent formulations
    Patent number: 6562748
    Abstract: A soda lime formulation comprises calcium hydroxide in admixture with sodium hydroxide and potassium hydroxide and water, and further comprises a zeolite such as sodium aluminium silicate. The formulation has improved mechanical strength and may be prepared in granular form by mixing its constituents with water to form a paste and passing the paste between a pair of rollers having hemispherical depressions therein.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: May 13, 2003
    Assignee: Intersurgical Limited
    Inventor: Michael John Holder
  • PROCESS FOR THE MANUFACTURE OF CHEMICAL ABSORBENTS AND CHEMICAL ABSORBENT FORMULATIONS
    Publication number: 20020072466
    Abstract: A soda lime formulation comprises calcium hydroxide in admixture with sodium hydroxide and potassium hydroxide and water, and further comprises a zeolite such as sodium aluminium silicate. The formulation has improved mechanical strength and may be prepared in granular form by mixing its constituents with water to form a paste and passing the paste between a pair of rollers having hemispherical depressions therein.
    Type: Application
    Filed: July 2, 1999
    Publication date: June 13, 2002
    Inventor: MICHAEL JOHN HOLDER