Patents by Inventor Subramanian Angaiah

Subramanian Angaiah 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).

  • Solid state synthesis of lithium meta arsenite
    Patent number: 6849246
    Abstract: The present invention provides a novel solid state method for the synthesis of lithium meta arsenite (LiAsO2) by mixing a lithium source with arsenious trioxide under controlled conditions to obtain the lithium meta arsenite.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: February 1, 2005
    Assignee: Council of Scientific & Industrial Research
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
  • Process for the preparation of lithium hexafluoroarsenate
    Patent number: 6682712
    Abstract: The present invention provides a novel thermal solid state method for the synthesis of lithium hexfluoroarsenate either in a two step or a single step method, preferably at last substantially in the solid state.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: January 27, 2004
    Assignee: Council of Scientific & Industrial Research
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
  • Process for the preparation of lithium metaphosphate
    Patent number: 6656441
    Abstract: The present invention provides a process for the preparation of lithium metaphosphate comprising reacting a lithium source and a phosphorous source in solid state to obtain lithium metaphosphate.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: December 2, 2003
    Assignee: Council of Scientific & Industrial Research
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
  • Process for the preparation of lithium hexafluoroarsenate
    Publication number: 20030190279
    Abstract: The present invention provides a novel thermal solid state method for the synthesis of lithium hexfluoroarsenate either in a two step or a single step method, preferably at last substantially in the solid state.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 9, 2003
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
  • Solid state synthesis of lithium meta arsenate
    Publication number: 20030185745
    Abstract: The present invention provides a novel solid state method for the synthesis of lithium meta arsenate (LiAsO2) by mixing a lithium source with arsenious trioxide under controlled conditions to obtain the lithium meta arsenate.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
  • PROCESS FOR THE PREPARATION OF LITHIUM METAPHOSPHATE
    Publication number: 20030185737
    Abstract: The present invention provides a process for the preparation of lithium metaphosphate comprising reacting a lithium source and a phosphorous source in solid state to obtain lithium metaphosphate.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gnagadharan Ramaiyer, Raghavan Meenakshisundaram
  • Process for the preparation of LiBF4
    Patent number: 6623717
    Abstract: The present invention describes a process for the preparation of LiBF4 by reacting LiBO2 with 10 to 48% HF solution in aqueous solution at ambient temperature, concentrating the product and recrystallizing to obtain high purity LiBF4.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: September 23, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gangadharan Ramaiyer
  • Process for the preparation of olivine lithium nickel phosphate composite
    Patent number: 6485699
    Abstract: The present invention describes a process for the production of olivine lithium nickel phosphate composite by uniformly mixing oxides of Ni and P with Li2CO3, converting the mixture to a paste by adding glycerol, calcining the paste continuously to obtain the desired composite.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: November 26, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gangadharan Ramaiyer, Mani Ariyanan
  • Process for the preparation of LiBF4
    Publication number: 20020172634
    Abstract: The present invention describes a process for the preparation of LiBF4 by reacting LiBO2 with 10 to 48% HF solution in aqueous solution at ambient temperature, concentrating the product and recrystallizing to obtain high purity LiBF4.
    Type: Application
    Filed: March 28, 2001
    Publication date: November 21, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gangadharan Ramaiyer
  • Process for the preparation of olivine lithium nickel phosphate composite
    Publication number: 20020141928
    Abstract: The present invention describes a process for the production of olivine lithium nickel phosphate composite by uniformly mixing oxides of Ni and P with Li2CO3, converting the mixture to a paste by adding glycerol, calcining the paste continuously to obtain the desired composite.
    Type: Application
    Filed: March 28, 2001
    Publication date: October 3, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Subramanian Angaiah, Vasudevan Thiagarajan, Gangadharan Ramaiyer, Mani Ariyanan