Varco I/P — 191 Patents, Ranked #3,980

Patents per Year

Showing 1–50 of 168 inventors

Rank	Name	Patents
1	Kenneth W. Seyffert	36
2	Guy L. McClung, III	32
3	David Schulte	26
#4	Thomas C. Adams	21
#5	David W. Largent	15
#6	Charles N. Grichar	14
#6	George I. Boyadjieff	14
#8	Robert Folk	13
#8	Steven Lorne Folk	13
#10	George Alexander Burnett	12
#11	David Mason	11
#11	Hans van Rijzingen	11
#13	Frank Benjamin Springett	10
#14	Brian L. Eidem	9
#14	Clive Lam	9
#14	Daniel Juhasz	9
#17	Lawrence E. Wells	8
#18	Anton Krijnen	7
#18	Eric Scott	7
#18	Herman M. Kamphorst	7
#18	Neil Edward West	7
#18	Richard James Koch	7
#18	William L. Koederitz	7
#24	Gustaaf Louis van Wechem	6
#24	Jeffrey E. Walker	6
#24	John E. Goode	6
#24	Kerry Ward	6
#24	Vincent D. Leone	6
#29	Hans Joachim Dietrich Böttger	5
#29	James D. Brugman	5
#29	James Michael McIntosh	5
#29	Lyndon Stone	5
#29	Preston R. Fox	5
#29	Ronald W. Yater	5
#35	Brent Marsh	4
#35	David J. McWhorter	4
#35	David Wood	4
#35	Dean Allen Bennett	4
#35	Eric Trevor Ensley	4
#35	Gary Steven Strong	4
#35	Mallappa Guggari	4
#35	Manfred Worms	4
#35	Padmasiri Daya Seneviratne	4
#35	Robert Parker	4
#35	Troy D. Cain	4
#46	Cliff Swiontek	3
#46	Colin Crabb	3
#46	Hector M. Murray	3
#46	Howard Ervin	3
#46	Jefrey E. Walker	3