John Stevenson — 4 Patents at Refractory Intellectual Property

John Stevenson has been granted 4 US patents while listed as an inventor at Refractory Intellectual Property. The first was granted in 1996 and the most recent in September 2014. John Stevenson ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list John Stevenson in Uppingham, GB.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
8828310	Flow control device	Gerald Nitzi, Tim Hedley, Joseph McGuire	2014-09-09
5951452	Method and apparatus for the manufacture of infusion packages	—	1999-09-14
5674545	Compressible packages for infusible substances	Anthony Evan Shakspeare	1997-10-07
D374756	Infusion package	—	1996-10-22

John Stevenson — 4 Patents

Issued Patents All Time

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