Patents by Inventor Gautam K. Mahajan

Gautam K. Mahajan 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: 6499311
    Abstract: A preform and a blow molded container formed therefrom and having plural cavities or compartments for providing enhanced properties including vacuum containers for hot and cold product, or barrier materials including gases or layered material, improved creep resistance, use of lower cost and/or recycled materials, increased wall strength and aerosol properties.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: December 31, 2002
    Inventor: Gautam K. Mahajan
  • Publication number: 20020005044
    Abstract: A preform and a blow molded container formed therefrom and having plural cavities or compartments for providing enhanced properties including vacuum containers for hot and cold product, or barrier materials including gases or layered material, improved creep resistance, use of lower cost and/or recycled materials, increased wall strength and aerosol properties.
    Type: Application
    Filed: April 3, 2001
    Publication date: January 17, 2002
    Inventor: Gautam k. Mahajan
  • Patent number: 6209344
    Abstract: A preform and a blow molded container formed therefrom and having plural cavities or compartments for providing enhanced properties including vacuum containers for hot and cold product, or barrier materials including gases or layered material, improved creep resistance, use of lower cost and/or recycled materials, increased wall strength and aerosol properties.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: April 3, 2001
    Inventor: Gautam K. Mahajan
  • Patent number: 4977005
    Abstract: A champagne bottom plastic bottle having the bottom reinforced by internal radiating ribs which are formed by solid material. The bottle is formed in the customary manner by utilizing a preform which has molded on the inner surface thereof longitudinal ribs. The preform is formed by conventional injection molding equipment which has been modified only to form along the lower part of the customary core member longitudinally extending rib forming grooves.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: December 11, 1990
    Assignee: The Continental Group, Inc.
    Inventors: Suppayan M. Krishnakumar, Kenneth F. M. Friendship, Gautam K. Mahajan, John F. E. Pocock
  • Patent number: 4704180
    Abstract: This relates to the forming of packages by thermoforming a web which is of a laminated construction. By forming the web as two separate webs, particularly when one of the webs may include sterile components, the number of splices which must be made under sterile conditions is greatly reduced as compared to the number of splices which may be conventionally formed.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: November 3, 1987
    Assignee: Continental Packaging Company
    Inventors: Louis J. Marsella, Gautam K. Mahajan
  • Patent number: 4603831
    Abstract: A method and apparatus for the forming of a champagne bottom plastic bottle wherein the bottom is reinforced by internal radiating ribs which are formed by solid material. The bottle is formed in the customary manner by utilizing a preform which has molded on the inner surface thereof longitudinal ribs. The preform is formed by conventional injection molding equipment which has been modified only to form along the lower part of the customary core member longitudinally extending rib forming grooves.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: August 5, 1986
    Assignee: The Continental Group, Inc.
    Inventors: Suppayan M. Krishnakumar, Kenneth F. M. Friendship, Gautam K. Mahajan, John F. E. Pocock
  • Patent number: 4525401
    Abstract: This disclosure relates to a plastic bottle having a bottom structure of the champagne bottle type. The bottom is reinforced by radiating ribs which are circumferentially spaced and the ribs, utilizing a minimum of material, stiffen the bottom so as to prevent the domed inner section of the bottom from reverting and also greatly resist creep of the bottom under the influence of time and internal pressure. The ribs may be only across the juncture section between inner and outer sections of the bottom, or may extend entirely from the outer section across the juncture section and substantially to the domed center of the domed section. The ribs may also be upstanding and serve to function as guides for a liquid product being placed into the bottle so as to reduce turbulences and aid in expediting the filling operation.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: June 25, 1985
    Assignee: The Continental Group, Inc.
    Inventors: John F. E. Pocock, Gautam K. Mahajan, Suppayan M. Krishnakumar, Kenneth F. M. Friendship
  • Patent number: 4403706
    Abstract: This relates to an improvement on a recently developed ribbed preform in a champagne type bottle bottom formed therewith including solid internal ribs. In accordance with this invention, the ribs are made hollow or tubular in the preform with the resultant ribs in the bottle bottom also being hollow. The hollow ribs of the preform serve the same purpose as the prior solid ribs in retaining the plastic material of the preform in the bottom area during the bottle formation and the hollow ribs in the resultant bottle also provide the desired added stiffness for preventing bottom eversion.
    Type: Grant
    Filed: June 8, 1982
    Date of Patent: September 13, 1983
    Assignee: The Continental Group, Inc.
    Inventor: Gautam K. Mahajan
  • Patent number: 4396816
    Abstract: This relates to the heating of polyethylene terephthalate by way of RF energy. It has been found that if polyethylene terephthalate articles are passed through a radio frequency energy field, the molecules thereof will become excited and rapid heating will result. This heating is particularly useful in the heating of preforms prior to the blow molding thereof and by varying the configuration and relationship of electrodes, controlled heating of the preforms may be effected with it being possible to have a controlled temperature differential along the length of the preform or other article so heated.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: August 2, 1983
    Assignee: The Continental Group, Inc.
    Inventors: Suppayan M. Krishnakumar, John F. E. Pocock, Gautam K. Mahajan, John F. Trembly
  • Patent number: 4342895
    Abstract: This relates to the heating of polyethylene terephthalate by way of RF energy. It has been found that if polyethylene terephthalate articles are passed through a radio frequency energy field, the molecules thereof will become excited and rapid heating will result. This heating is particularly useful in the heating of preforms prior to the blow molding thereof and by varying the configuration and relationship of electrodes, controlled heating of the preforms may be effected with it being possible to have a controlled temperature differential along the length of the preform or other article so heated.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: August 3, 1982
    Assignee: The Continental Group, Inc.
    Inventors: Suppayan M. Krishnakumar, John F. E. Pocock, Gautam K. Mahajan, John F. Trembly
  • Patent number: 4335821
    Abstract: This disclosure relates to a minor change in the bottom configuration of a blow molded container and bottle formed of a plastic material which compensates for shrinkage in the bottom structure due to improper cooling whereby the improper cooling may be advantageously utilized to provide for a marked decrease in the blow molding cycle time.
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: June 22, 1982
    Assignee: The Continental Group, Inc.
    Inventors: Wayne N. Collette, Suppayan M. Krishnakumar, Gautam K. Mahajan
  • Patent number: 4267144
    Abstract: A method for making a minor change in the bottom configuration of a blow molded container and bottle formed of a plastic material which compensates for shrinkage in the bottom structure due to improper cooling whereby the improper cooling may be advantageously utilized to provide for a marked decrease in the blow molding cycle time.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: May 12, 1981
    Assignee: The Continental Group, Inc.
    Inventors: Wayne N. Collette, Suppayan M. Krishnakumar, Gautam K. Mahajan
  • Patent number: 4249667
    Abstract: This disclosure relates to improvements in the cross section of a bottom end of a plastic bottle suitable for packaging liquids under internal pressures. The bottom end is primarily one which includes a generally hemispherical bottom wall having projecting therefrom in circumferentially spaced relation hollow legs terminating in supporting feet. The bottom end is stiffened against creep of the plastic material over a period of time under the influence of the internal pressure by changing the configuration of the bottom wall from that of a hemisphere to one which includes a configuration of straight line sections and curved line sections when viewed in radial cross section along the axis of the bottle.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: February 10, 1981
    Assignee: The Continental Group, Inc.
    Inventors: John F. E. Pocock, Suppayan M. Krishnakumar, Gautam K. Mahajan, Richard E. Clark
  • Patent number: 4108324
    Abstract: A container formed of synthetic resinous material having a bottom structure the outer surface of which comprises a central concavity and a convex heel, the heel surrounding the concavity and merging therewith and with the container sidewall. A plurality of hollow convex ribs, distributed in a symmetrical array, interrupt the outer surface of the concavity and merge smoothly therewith, each rib extending longitudinally in the direction of the heel and downwardly from an inner portion of the concavity. The wall of the bottom structure generally decreases in thickness progressively from the innermost point of the concavity to the sidewall.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: August 22, 1978
    Assignee: The Continental Group, Inc.
    Inventors: Suppayan M. Krishnakumar, Siegfried S. Roy, John F. E. Pocock, Salil K. Das, Gautam K. Mahajan