Keijo Hellgren — 17 Patents at Avure Technologies Ab

Keijo Hellgren has been granted 17 US patents while listed as an inventor at Avure Technologies Ab. The first was granted in 1987 and the most recent in March 2009. Keijo Hellgren ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Keijo Hellgren in Västerås, SE.

Patents per Year

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Showing 1–17 of 17 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
7509827	Device and method for expansion forming	—	2009-03-31
7461531	Press plant and a method and use for it with a pressure cell and a divisible tray	—	2008-12-09
7320211	Method of exchanging a diaphragm device	—	2008-01-22
7155948	Forming tool	—	2007-01-02
7155949	Fluid cell press with a gripping arrangement and method and use of the press	—	2007-01-02
7150177	Hydraulic press with a pressure cell and a method and use for it, whose press body consists of prestressed lamellas	—	2006-12-19
7150171	Pressure cell press comprising a tray, and a method for manufacturing said tray	—	2006-12-19
7127925	Diaphragm support and a method for initial sealing in a pressure cell	—	2006-10-31
7096774	High pressure press, method for operating a high pressure press and use of such a press	—	2006-08-29
6439018	Device and method for expansion forming	Lennart Svensson	2002-08-27
6183812	Method for treatment of wood	—	2001-02-06
6178796	Device and method for shaping flat articles	—	2001-01-30
6053224	Device for pressure treatment of wood	Tom Johannisson	2000-04-25
4711111	Forming press mat utilizes trays formed of thin bottom plates and separate annular frames	—	1987-12-08	$65,000
4693103	Forming press of the pressure cell type and a process for changing diaphrams in such a press	—	1987-09-15	$26,000
4676086	Press of pressure cell type	—	1987-06-30	$18,000
4658618	Forming press of the pressure cell type	—	1987-04-21	$18,000

Keijo Hellgren — 17 Patents

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