Patents by Inventor Tjandra Limanjaya

Tjandra Limanjaya 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: 7033535
    Abstract: For the manufacture of a polyethylene terephalate (P.E.T.) bottle with an off-centre neck, a preform is heated and its body is slightly angled with respect to its neck by sideways displacement. The preform is inserted in a blowing mould. A tilted stretching rod is advanced into the preform at the same time as it is blown to shape in the mould. The finished bottle has its neck off-centre with respect to the rest of the bottle.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: April 25, 2006
    Inventor: Tjandra Limanjaya
  • Patent number: 6875396
    Abstract: A PET hot fill bottle (2) has a neck (3) and a body (4). It is stretched and blown into a cavity (14), with internal pressure holding the body against the cavity. During a first period, the cavity is heated to 100° to 160° C. for between 3 to 7 seconds to relax stresses in the body. During a second period the cavity is cooled to 60° to 120° C. for 4 to 8 seconds. This solidifies it—without introducing stresses—so that it can be removed from the mould. The resulting bottle is heat stable when filled with water close to its boiling point, namely at 92° C. to 98° C. For the rapid heating and cooling of the mould cavity, it is provided with two series of passages (16, 17). The former house ohmic heaters (18); whilst the latter are connected to water and air supply lines (19, 20).
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: April 5, 2005
    Inventor: Tjandra Limanjaya
  • Patent number: 6581792
    Abstract: An injection moulded, plastics material cap (1) for a screw top bottle has a top and a skirt with an anti-tamper band (2) connected to the skirt at a tear-off line by links (3). On the inside of the top of the cap, a depending annular ridge (10) is provided. Its inside diameter is such that it abuts and seals on the outside diameter of the distal end of the neck of the bottle. Also on the inside of the cap, inside the ridge (10), is moulded a forked feature having an inner limb (12) which extends generally downwards with an outwards bias, and an outer limb (13) which extends generally outwards with downwards bias. The inner limb is dimensioned to fit inside the mouth at the neck of the bottle, sealingly engaging it, whiles the outer limb is dimensioned to abut the end of the neck, also sealingly engaging it when the cap is screwed tight.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: June 24, 2003
    Inventor: Tjandra Limanjaya