Walter Spirig has been granted 6 US patents while listed as an inventor at Sepitec Foundation . The first was granted in 1982 and the most recent in September 2008. Walter Spirig ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Walter Spirig in Diepoldsau, QC, CH.
Patents per Year Patents granted per year, 1982 to 2008 Bar chart with a peak of 2 patents in 2004. peak 2 1982: 1 patents 1982 1992: 1 patents 1992 2004: 2 patents 2004 2005: 1 patents 2005 2008: 1 patents 2008
Issued Patents All Time
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Showing 1–6 of 6 patents
Patent # Title Co-Inventors Date
7419714 Composite of polymer or ceramic materials and component made of such a composite Fritz Magerl , Roger Roland Tognini , Erich Wintermantel , Jörg Mayer , Thomas Andreas Peter 2008-09-02
6895844 Laser-based calibrating method and apparatus Young Chul Shin 2005-05-24
6808526 Osteosynthesis screw, especially for application by a translaminar vertebral screw Fritz Magerl , Erich Wintermantel , Jörg Mayer , Roger Roland Tognini , Clemens Dransfeld 2004-10-26
6699250 Osteosynthesis screw Helmut Osterle , Guido Hasler 2004-03-02
5160850 Light beam interrupt detection apparatus for use in a vibrating environment Jacques Tetrault 1992-11-03
4361351 Manually closable seal — 1982-11-30