Graham Walker — 9 Patents at Sequal Technologies

Graham Walker has been granted 9 US patents while listed as an inventor at Sequal Technologies. The first was granted in 1983 and the most recent in May 2012. Graham Walker ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Graham Walker in Guelph, ON, CA.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date
RE43398	Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator	Scott C. Honkonen, Theodore B. Hill, Charles C. Hill	2012-05-22
6698423	Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator	Scott C. Honkonen, Theodore B. Hill, Charles C. Hill	2004-03-02
6681764	Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator	Scott C. Honkonen, Theodore B. Hill, Charles C. Hill	2004-01-27
6651653	Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator	Scott C. Honkonen, Theodore B. Hill, Charles C. Hill	2003-11-25
6247234	Razor and blade	James Hill	2001-06-19
5979440	Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator	Scott C. Honkonen, Theodore B. Hill, Charles C. Hill	1999-11-09
4738122	Refrigerant expansion device with means for capturing condensed contaminants to prevent blockage	—	1988-04-19
4631928	Joule-Thomson apparatus with temperature sensitive annular expansion passageway	—	1986-12-30
4420265	Infrared temperature monitoring apparatus having means for sky radiation compensation	Charles E. Everest	1983-12-13

Graham Walker — 9 Patents

Issued Patents All Time

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