Stephen P. Simons — 7 Patents at Hydril

Stephen P. Simons has been granted 7 US patents while listed as an inventor at Hydril. The first was granted in 1993 and the most recent in May 1999. Stephen P. Simons ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Stephen P. Simons in Kingwood, TX, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date
5906375	Rubber riveting of molded parts	Kenneth D. Young	1999-05-25
5851013	Blowout preventer packing element with metallic inserts	—	1998-12-22
5713581	Fibrous seal for blowout preventer	Douglas W. Carlson, William David Breach	1998-02-03
5542454	Free flow low energy pipe protector	Douglas W. Carlson	1996-08-06
5405467	Rubber riveting of molded parts	Kenneth D. Young	1995-04-11
5364064	Safety sub with asymmetrical wall elastomeric closure for retaining drilling fluids	Douglas W. Carlson	1994-11-15
5180137	Ram type blowout preventer having improved ram front packings	Douglas W. Carlson	1993-01-19

Stephen P. Simons — 7 Patents

Issued Patents All Time

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