Inventor · disambiguated record
Karl A. Parfrey
Also filed as: PARFREY KARL · PARFREY KARL A
11 granted patents·43 citations·filing 1997–2013
88Inventor score
Top patents by PatentIndex Score
11 records- 0173US8679606B2Thick walled composite tubular and method of makingPARFREY KARL A·Filed 2010·Granted Mar 25, 2014·3 cites·5 claims
- 0262US8403055B2Self sealing hydraulic couplerPARFREY KARL A·Filed 2012·Granted Mar 26, 2013·2 cites·7 claims
- 0361US8870186B2Seal assembly for a casing hangerHOANG CHAU·Filed 2012·Granted Oct 28, 2014·3 cites·12 claims
- 0461US7025384B2Apparatus and method for securing a tubular liner in a composite pipeVETCO GRAY INC·Filed 2002·Granted Apr 11, 2006·12 cites·4 claims
- 0560US8277716B2Apparatus, system, and method of manufacturing a composite tubular using a stiffened mandrelGALLE GARY L·Filed 2010·Granted Oct 2, 2012·2 cites·17 claims
- 0660US7963337B2Composite enhanced metallic drilling riser systemVETCO GRAY INC·Filed 2008·Granted Jun 21, 2011·6 cites·20 claims
- 0758US8640318B2Method for forming elongated composite tubularVETCO GRAY INC·Filed 2013·Granted Feb 4, 2014·0 cites·6 claims
- 0851US8113287B2Self sealing hydraulic couplerPARFREY KARL A·Filed 2009·Granted Feb 14, 2012·3 cites·10 claims
- 0946US8413319B2Apparatus for forming elongated composite tubularPARFREY KARL·Filed 2010·Granted Apr 9, 2013·0 cites·13 claims
- 1036US5900689ABinding for winding overhangs of rotors of electric machines, and method of producing bindings for winding overhangsABB RESEARCH LTD·Filed 1997·Granted May 4, 1999·7 cites·5 claims
- 1132US6029338ABinding for winding overhangs of rotors of electric machines, and method of producing bindings for winding overhangsABB RESEARCH LTD·Filed 1999·Granted Feb 29, 2000·5 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Karl A. Parfrey files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →