Edward Hemphill — 11 Patents at Hydril

Edward Hemphill has been granted 11 US patents while listed as an inventor at Hydril. The first was granted in 2003 and the most recent in July 2012. Edward Hemphill ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Edward Hemphill in Houston, TX, US.

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8230930	Mounts for blowout preventer bonnets and methods of use	Michael Wayne Berckenhoff, William L. Carbaugh	2012-07-31
7802626	Mounts for blowout preventer bonnets and methods of use	Michael Wayne Berckenhoff, William L. Carbaugh	2010-09-28
7699554	Removable seal carrier for blowout preventer bonnet assembly	William Rinehart Holland, Jr., Michael Wayne Berckenhoff	2010-04-20
7413019	Mounts for blowout preventer bonnets	Michael Wayne Berckenhoff	2008-08-19
7281586	Mounts for blowout preventer bonnets	Michael Wayne Berckenhoff, William L. Carbaugh	2007-10-16
7246666	Mounts for blowout preventer bonnets	Michael Wayne Berckenhoff, William L. Carbaugh	2007-07-24
7121348	Mounts for blowout preventer bonnets	Michael Wayne Berckenhoff, William L. Carbaugh	2006-10-17	$9,233,000
7096960	Mounts for blowout preventer bonnets	Michael Wayne Berckenhoff, William L. Carbaugh	2006-08-29	$10,892,000
6845959	Quick release blowout preventer bonnet	Michael Wayne Berckenhoff, William Rinehart Holland, Jr.	2005-01-25	$7,356,000
6554247	Quick release blowout preventer bonnet	Michael Wayne Berckenhoff	2003-04-29	$1,835,000
6510897	Rotational mounts for blowout preventer bonnets	—	2003-01-28	$3,824,000

Edward Hemphill — 11 Patents

Issued Patents All Time

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