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HETTINGA SIEBOLT

Overview
  • Total Patents
    68
About

HETTINGA SIEBOLT has a total of 68 patent applications. Its first patent ever was published in 1966. It filed its patents most often in EPO (European Patent Office), Germany and United States. Its main competitors in its focus markets machines, civil engineering and environmental technology are GUNZE KOBUNSHI KOGYO CO LTD, KAUFMANN GEORG and NIXON NITRATION WORKS.

Patent filings per year

Chart showing HETTINGA SIEBOLTs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hettinga Siebolt 61
#2 Whited Berton G 3
#3 Ober James K 3
#4 Osborne Richard D 3
#5 Spicer Mark W 3
#6 Aretz Peter J 2
#7 Buehl Harold J 1
#8 Osborne Richard 1
#9 Sielbolt Hettinga 1
#10 Anderson Marty Lewis 1

Latest patents

Publication Filing date Title
DE19910290A1 Heat laminated fabric hinge production method
DE19910309A1 Manufacturing an extruded-in fabric hinge e.g. for motor vehicle
EP0829337A2 An injection molded plastic article and a method of molding same
EP0819515A1 Metal reinforced plastic article and method of forming same
EP0805064A2 Seat cushion and method of molding a seat unit including the seat cushion
DE19705524A1 Pressure injection moulding maintaining planar front in melt flow
EP0749821A2 A low pressure method for injection molding a plastic article
EP0765722A1 Method for controlling skin thickness of plastic article made with controlled density
MY132152A Method for controlling skin thickness of plastic article made with controlled density
WO9626064A1 Self-contained molding apparatus and method of use
DE19606568A1 Closing of dies for plastic injection moulding
EP0664196A1 A molding apparatus and method for molding a plastic article of varying density
EP0630731A1 Method for molding a plastic article using a multi-point volume control system
CA2108945A1 Clamping apparatus and method for clamping an injection mold assembly
FR2689052A1 Flow regulation device for a plastic material injection machine.
US5139714A Process for injection molding a hollow plastic article
US5275764A Method of molding a vehicle lamp assembly
US5110532A Method for molding a laminate
US5151237A Method of injection molding a flat deformable laminate
CA2011731A1 Method for forming irrigation pipe having a porous side wall