Patents by Inventor John P. Larkin

John P. Larkin 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).

  • Publication number: 20030126291
    Abstract: A method of addressing a node in a network comprising reading an identifier, translating the identifier into a group identification representative of a plurality of identifiers, indexing an address table with the group identification, and mapping the identification to a first node of the network is provided. A message distributor for processing an identifier and routing the identifier to a processing node comprising a translation module for receiving the identifier and converting the identifier into one of a plurality of group identifications, and a first table including a plurality of records each indexable by one of the plurality of group identifications, an indexed record including an element having a first address of the processing node is provided.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 3, 2003
    Inventors: Ben B. Wang, Rayappu F. Joseph, Seshadri Sathyanarayan, Zhiyong Zhang, John P. Larkins
  • Patent number: 6563919
    Abstract: A gateway cluster has a number of gateways for different types of communication protocols. The respective gateways convert network messages to normalized messages by querying the categories, data, and network types of the normalized data for the mobile systems from which the network messages were generated. A database system stores normalized data in categories. The normalized data include data relating to the mobile systems and network types for the data. A unified mobility manager is coupled to and in communications with the gateway cluster and the database system. The unified mobility manager receives and processes the normalized messages, performs operations based on the normalized messages and on the categories, the data, and the network types of the normalized data, and formulates normalized responses responsive to the normalized messages. The normalized responses are converted to network responses at the gateways, and the network responses are sent to the respective mobile systems.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: May 13, 2003
    Assignee: Nortel Networks Limited
    Inventors: Lakshminarasimhan Aravamudhan, John P. Larkins, Rohit Gupta, Haitao Li
  • Patent number: 6295291
    Abstract: A potential radiotelephone service subscriber logs on to a world wide web server (105) using an internet access device (101). The potential subscriber is presented with a plurality of selectable radiotelephone services and features. The potential subscriber then provides the billing system (130) with credit information that is validated through the credit validation system (140). A radiotelephone service profile is stored in the home location register (110) after the subscription process has been completed. The subscriber is then instructed to power up the radiotelephone that then registers with the system. An over-the-air activation function (135) collects data from the billing system (130) and an authentication center (125) and sends the data to the mobile switching center (115) that then transmits it through the base station (120) to the radiotelephone. The radiotelephone reprograms its own registers with the appropriate data.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: September 25, 2001
    Assignee: Nortel Networks Limited
    Inventor: John P. Larkins
  • Patent number: 5466710
    Abstract: The present invention provides a class of substituted bicyclooctanes of formula ##STR1## wherein R is a C.sub.2-10 non-aromatic hydrocarbyl optionally substituted by cyano, halo, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy or S(O).sub.m R.sup.3 ; R.sup.1 and r.sup.2 are independently hydrogen, halo, a C.sub.1-3 aliphatic group optionally substituted, S(O).sub.m,R.sup.4, or R.sup.1 and R.sup.2 and the carbon atoms to which they are attached form a C.sub.5-7 carbocyclic ring optionally substituted by halo, or a C.sub.1-3 aliphatic or alkoxy group;A-X is a group:(i) A'C.tbd.CX in which A' is a C.sub.3-6 alkyl, alkenyl or alkynyl or a C.sub.3-10 cycloalkyl or cycloalkenyl group all optionally containing one to three hetero atoms.(ii) BX in which B is a group (CH.sub.2).sub.2 O or (CH.sub.2).sub.2 S(O).sub.n or a C.sub.2-6 aliphatic chain optionally containing one or two oxygen or sulphur atoms and/or double bonds and optionally further substituted;X is hydrogen, halo, SiR.sup.5 R.sup.6 R.sup.7 or SnR.sup.5 R.sup.6 R.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: November 14, 1995
    Assignee: Roussel Uclaf
    Inventors: John B. Weston, John P. Larkin, Ian H. Smith
  • Patent number: 5371075
    Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2,]-octanes and bicyclo-[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: December 6, 1994
    Assignees: Roussel-Uclaf, University of California
    Inventors: John E. Casida, Christopher J. Palmer, John P. Larkin, Ian H. Smith
  • Patent number: 5204333
    Abstract: The present invention provides compounds of the formula (I): ##STR1## wherein R is a phenyl group, substituted fluorine atoms formulations containing them and their use in controlling pest infestation.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: April 20, 1993
    Inventors: John P. Larkin, John B. Weston, Ian H. Smith, Christopher J. Palmer, John E. Casida
  • Patent number: 5157029
    Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: October 20, 1992
    Assignee: The Regents of the University of California
    Inventors: John E. Casida, Christopher J. Palmer, John P. Larkin, Ian H. Smith
  • Patent number: 5116862
    Abstract: The present invention provides a class of novel substituted bicyclooctanes which have pesticidal activity, particularly against arthropod pests. Pesticidal formulations containing the compounds of the formula (I), their use in the control of pests and methods for their preparation are also disclosed.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: May 26, 1992
    Assignee: The Wellcome Foundation Limited
    Inventors: John B. Weston, John P. Larkin, Ian H. Smith
  • Patent number: 5098929
    Abstract: A compound of the formula (I): ##STR1## wherein R is C.sub.2-10 alkyl, alkenyl or alkynyl, each optionally subsituted by or methyl substituted by cyano, C.sub.3-4 cycloalkyl, halo, C.sub.1-4 alkoxy or a group S(O)mR.sup.4 where R.sup.4 is C.sub.1-4 alkyl and m is O, 1 or 2, or R is C.sub.3-10 cycloalkyl, C.sub.4-10 cycloalkenyl or phenyl, each optionally substituted by C.sub.1-4 alkoxy, C.sub.1-3 alkyl, C.sub.2-4 alkynyl, halo, cyano or a group S(O)mR.sup.4 as defined hereinbefore; R.sup.1 is halo, C.sub.1-3 alkyl, C.sub.2-3 alkenyl or alkynyl each optionally substituted by halo, cyano, C.sub.1-4 alkoxy, alkyl carbalkoxy containing up to 6 carbon atoms, a group S(O)mR.sup.4 as defined hereinbefore or alkynyl substituted by tri-C.sub.1-4 alkylsilyl, or R.sup.1 is cyano, spiro-cyclopropyl, gem dimethyl, oxo or methylene optionally substituted by cyano or C.sub.1-3 alkyl optionally substituted by fluorine, or R.sup.1 and R and the carbon atoms to which they are attached form a C.sub.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: March 24, 1992
    Assignee: The Wellcome Foundation Limited
    Inventors: John P. Larkin, Ian H. Smith
  • Patent number: 5061726
    Abstract: Pesticidally-active alkynylphenyl-substituted 1,3-oxathianes and related substituted compounds of the formula: ##STR1## and their use in controlling pests such as arthropods and helminths are described.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: October 29, 1991
    Assignee: The Regents of the University of California
    Inventors: Christopher J. Palmer, John E. Casida, John P. Larkin
  • Patent number: 5057508
    Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: October 15, 1991
    Assignee: The Regents of the University of California
    Inventors: John E. Casida, Christopher J. Palmer, John P. Larkin, Ian H. Smith
  • Patent number: 5057504
    Abstract: Pesticidal bicyclo-octanes are of the formula ##STR1## where R is a substituted or unsubstituted aliphatic or aromatic group, R' and R.sup.3 are H or a substituted or unsubstituted aliphatic or aromatic group, R.sup.2 is a substituted or unsubstituted heterocyclic group containing at least one ring nitrogen and is preferably a 3- or 4- pyridyl group, Z is CH.sub.2 CH.sub.2, CH.sub.2 O--CH.sub.2 S or COCH.sub.2 or CH(OR.sup.5)CH.sub.2 where R.sup.5 is H, alkyl, acyl or carbamoyl at Y and Y' are O or S(O).sub.m where m is 0, 1 or 2.Various methods for their preparation are described.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: October 15, 1991
    Assignee: The Wellcome Foundation Limited
    Inventors: Malcolm H. Black, John A. Wyatt, John B. Weston, John P. Larkin, Ian H. Smith, David A. Pulman
  • Patent number: 5026874
    Abstract: The present invention provides compounds of the formula (I): ##STR1## wherein R is a C.sub.2-10 non-aromatic hydrocarbyl group, a C.sub.2-10 non-aromatic hydrocarbyl group substituted by, or methyl substituted by cyano, halo, C.sub.1-4 alkoxy, C.sub.1-4 alkoxy substituted by halo, or a group S(O).sub.m R.sup.4 where R.sup.4 is C.sub.1-4 alkyl optionally substituted by halo and m is 0, 1 or 2, or R is phenyl or phenyl substituted by C.sub.1-4 alkoxy, C.sub.1-3 alkyl, C.sub.2-4 alkynyl, halo, C.sub.1-4 haloalkyl, cyano or a group S(O).sub.m R.sup.4 as defined hereinbefore;R.sup.1 and R.sup.2 may be the same or different, and each is hydrogen, or a C.sub.1-3 aliphatic group, or a C.sub.1-3 aliphatic group substituted by halo; R.sup.3 contains between 3 and 18 carbon atoms and is a group R.sup.5 wherein R.sup.5 is a C.sub.1-13 non-aromatic hydrocarbyl group, a C.sub.1-3 non-aromatic hydrocarbyl group substituted by a C.sub.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: June 25, 1991
    Assignee: Wellcome Foundation Limited
    Inventors: John P. Larkin, John A. Wyatt, Deborah J. Hawkes
  • Patent number: 4985582
    Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes, having 2 or 3 ring hetero atoms selected from O, S and N substituted at the 1-position by a carbocyclic group other than an alkynylphenyl group, and substituted at the 4-position and optionally substituted at the 3 and/or 5 position, are valuable pesticides, particularly insecticides and acaricides. Various cyclization processes are disclosed to form the various bicyclo ring systems.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: January 15, 1991
    Assignee: The Wellcome Foundation Ltd.
    Inventor: John P. Larkin
  • Patent number: 4965257
    Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes, having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compounds or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: October 23, 1990
    Assignee: The Regents of the University of California
    Inventors: John E. Casida, Christopher J. Palmer, John P. Larkin, Ian H. Smith
  • Patent number: 4942173
    Abstract: The present invention relates to a compound of the formula (I): ##STR1## wherein R is C.sub.2-10 alkyl, alkenyl or alkynyl, each optionally substituted by or methyl substituted by cyano, C.sub.3-4 cycloalkyl, halo, C.sub.1-4 alkoxy or a group S(O)m R.sup.4 where R.sup.4 is C.sub.1-4 alkyl and m is 0, 1 or 2, or Ris C.sub.3-10 cycloalkyl, C.sub.4-10 cycloalkenyl or phenyl, each optionally substituted by C.sub.1-4 alkoxy, C.sub.1-3 alkyl, C.sub.2-4 alkynyl, halo, cyano or a group S(O)m R.sup.4 as defined hereinbefore; R.sup.1 is halo, C.sub.1-3 alkyl, C.sub.2-3 alkenyl or alkynyl each optionally substituted by halo, cyano, C.sub.1-4 alkoxy, alkyl carbalkoxy containing up to 6 carbon atoms, a group S(O)m R.sup.4 as defined hereinbefore or alkynyl substituted by tri-C.sub.1-4 alkylsilyl, or R.sup.1 is cyano, spiro-cyclopropyl, gem dimethyl, gem dicyano, gem diethynyl, oxo or methylene optionally substituted by cyano of C.sub.1-3 alkyl optionally substituted by fluorine, or R.sup.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: July 17, 1990
    Assignee: The Regents of the University of California
    Inventors: John E. Casida, Christopher J. Palmer, John P. Larkin, Ian H. Smith
  • Patent number: 4816460
    Abstract: 1,3-Dimethyl-4,6-dioxo-2-thioxo-N-[4-(4'trifluoromethylphenoxy)phenyl] perhydropyrimidine-5-carboxamide and analogues are useful pesticides, particularly against insect pests of timber.
    Type: Grant
    Filed: December 9, 1986
    Date of Patent: March 28, 1989
    Assignee: Burroughs Wellcome Co.
    Inventor: John P. Larkin