Hettinga; Siebolt

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hettinga; Siebolt.The latest application filed is for "method for controlling skin thickness of plastic article made with controlled density".

Company Profile

0.22.0

Hettinga; Siebolt - Des Moines IA
Hettinga; Siebolt - Adel IA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method for controlling skin thickness of plastic article made with controlled density Grant 6,129,870 - Hettinga October 10, 2	2000-10-10
Low pressure method and apparatus for injection molding a plastic article Grant 6,060,005 - Hettinga May 9, 2	2000-05-09
Method and apparatus for molding a plastic article including injecting based upon a pressure-dominated control algorithm after detecting an indicia of a decrease in the surface area of the melt front Grant 6,056,902 - Hettinga May 2, 2	2000-05-02
Article of manufacture having computer readable program code for molding an article and method of molding an article by providing computer readable program code Grant 5,898,591 - Hettinga , et al. April 27, 1	1999-04-27
Low pressure method for injection molding a plastic article Grant 5,853,630 - Hettinga December 29, 1	1998-12-29
Seat unit and cushion Grant 5,788,332 - Hettinga August 4, 1	1998-08-04
Process for making molded-in lamina hinge Grant 5,762,852 - Hettinga June 9, 1	1998-06-09
Method for molding a plastic article of varied density Grant 5,437,823 - Hettinga , et al. August 1, 1	1995-08-01
Method for injection molding a plastic part using a film gate Grant 5,422,059 - Hettinga June 6, 1	1995-06-06
Process for making molded-in lamina hinge Grant 5,336,460 - Hettinga August 9, 1	1994-08-09
Method of molding a vehicle lamp assembly Grant 5,275,764 - Hettinga January 4, 1	1994-01-04
Method of injection molding a flat deformable laminate Grant 5,151,237 - Hettinga September 29, 1	1992-09-29
Process for injection molding a hollow plastic article Grant 5,139,714 - Hettinga August 18, 1	1992-08-18
Method for molding a laminate Grant 5,110,532 - Hettinga May 5, 1	1992-05-05
Method of molding a composite article Grant 4,743,323 - Hettinga May 10, 1	1988-05-10
Clamping structure and method for clamping the mold unit of a mold injection apparatus Grant 4,613,475 - Hettinga September 23, 1	1986-09-23
Tilt and rotate base for a display monitor Grant D282,847 - Hettinga March 4, 1	1986-03-04
Method and apparatus for mold injection Grant 4,397,806 - Hettinga August 9, 1	1983-08-09
Power tool accessory table Grant 4,350,193 - McCambridge , et al. September 21, 1	1982-09-21
Method for aligning an injection mold with a nozzle at the mold injection station Grant 4,307,057 - Hettinga December 22, 1	1981-12-22
Method of forming dimensionally stable foamed articles of polyvinyl aromatic resins and resultant product Grant 4,125,490 - Hettinga November 14, 1	1978-11-14
Square Grant D247,877 - Hettinga May 16, 1	1978-05-16

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