Inventor

John E. Campbell

Inventor

Houston, TX, US

Overview

66→

Patents

1976–2020

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 66 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary

E21BEarth or rock drilling39%

G06FElectric digital data processing11%

G01RMeasuring electric variables5%

H04LTransmission of digital information, e.g. telegraphic communication5%

H10BElectronic memory devices4%

H10DInorganic electric semiconductor devices4%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h104%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

Y10TTechnical subjects covered by former us classification3%

PatentTitleYear

10,704,329Cementing whipstock assembly and running tool with releasably engaged cement tube for minimizing downhole trips during lateral drill sidetracking operations2020 10,487,606Balancing load on milling cutting elements2019 9,512,680'Coring bit to whipstock systems and methods'2016 9,228,406'Extended whipstock and mill assembly'2016 9,212,873'Second cut arrow shaft extension'2015 9,206,648'Cementing whipstock apparatus and methods'2015 8,967,300'Pressure activated flow switch for a downhole tool'2015 8,881,845'Expandable window milling bit and methods of milling a window in casing'2014 8,820,437'Cementing whipstock apparatus and methods'2014 8,200,987'Dynamic object-level code translation for improved performance of a computer processor'2012 8,186,458'Expandable window milling bit and methods of milling a window in casing'2012 8,098,784'Systems, methods and computer program products for high speed data transfer using a plurality of external clock signals'2012 7,617,367'Memory system including a two-on-one link memory subsystem interconnection'2009 7,613,265'Systems, methods and computer program products for high speed data transfer using an external clock signal'2009 7,597,158'Drilling and hole enlargement device'2009 7,506,703'Drilling and hole enlargement device'2009 7,491,588'Method and structure for buried circuits and devices'2009 7,448,446'Thru tubing tool and method'2008 7,418,580'Dynamic object-level code transaction for improved performance of a computer'2008 7,377,328'Expandable anchor'2008 7,373,988'Liner running system and method'2008 7,320,918'Method and structure for buried circuits and devices'2008 7,178,589'Thru tubing tool and method'2007 7,152,270'Assembly for removing debris from a windshield'2006 7,141,853'Method and structure for buried circuits and devices'2006 6,935,431'Well reference apparatus and method'2005 6,899,183'Casing attachment method and apparatus'2005 6,842,938'Assembly for removing debris from a windshield'2005 6,759,282'Method and structure for buried circuits and devices'2004 6,648,069'Well reference apparatus and method'2003 6,543,536'Well reference apparatus and method'2003 6,499,538'Method and apparatus for forming an optimized window'2002 6,499,537'Well reference apparatus and method'2002 6,308,986'Restraint belt presenter'2001 6,279,954'Restraint belt presenter having offset rotary action'2001 6,025,739'CMOS driver circuit for providing a logic function while reducing pass-through current'2000 5,878,818'Mechanical set anchor with slips pocket'1999 5,829,531'Mechanical set anchor with slips pocket'1998 5,671,281'Self modifying access code for altering capabilities'1997 5,657,820'Two trip window cutting system'1997 5,553,144'Method and system for selectively altering data processing system functional characteristics without mechanical manipulation'1996 5,530,753'Methods and apparatus for secure hardware configuration'1996 5,530,749'Methods and apparatus for secure hardware configuration'1996 5,431,220'Whipstock starter mill assembly'1995 5,427,179'Retrievable whipstock'1995 5,365,587'Self modifying access code for altering capabilities'1994 5,348,107'Pressure balanced inner chamber of a drilling head'1994 5,213,158'Dual rotating stripper rubber drilling head'1993 5,154,231'Whipstock assembly with hydraulically set anchor'1992 5,082,020'Valve body for oilfield applications'1992 5,062,450'Valve body for oilfield applications'1991 5,048,621'Adjustable bent housing for controlled directional drilling'1991 5,035,292'Whipstock starter mill with pressure drop tattletale'1991 5,022,472'Hydraulic clamp for rotary drilling head'1991 4,865,137'Drilling apparatus and cutter'1989 4,765,404'Whipstock packer assembly'1988 4,759,413'Method and apparatus for setting an underwater drilling system'1988 4,722,615'Drilling apparatus and cutter therefor'1988 4,646,826'Well string cutting apparatus'1987 4,533,003'Drilling apparatus and cutter therefor'1985 4,399,428'Thermostat'1983 4,303,750'Alkaline fluid photographic processing composition containers'1981 4,303,751'Rupturable photographic processing alkaline fluid container'1981 4,240,077'Thermostat'1980 4,095,283'First in-first out memory array containing special bits for replacement addressing'1978 3,989,943'Angularly adjustable optical switch assembly'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2016Patents assigned to CAMPBELL JOHN E (8)· patent assignee history

1978–2012Patents assigned to IBM (16)· patent assignee history

1978–2012Based in Wappingers Falls, NY, US· patent location history

1985–2019Based in Houston, TX, US· patent location history

1991–1992Patents assigned to MASX ENERGY SERVICES GROUP INC (5)· patent assignee history

1994–2019Patents assigned to SMITH INTERNATIONAL (26)· patent assignee history

1994–1997Based in Hurley, NY, US· patent location history

1996Based in Duchtess County, NY, US· patent location history

2001–2015Based in Hazel Park, MI, US· patent location history

2012–2015Patents assigned to DEWEY CHARLES H (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SMITH INTERNATIONAL	26	1994–2019
IBM	16	1978–2012
CAMPBELL JOHN Eself	8	1976–2016
MASX ENERGY SERVICES GROUP INC	5	1991–1992
DEWEY CHARLES H	4	2012–2015

Locations

Location	Patents	Span
Houston, Texas, US	38	1985–2019
Wappingers Falls, New York, US	11	1978–2012
Hazel Park, MI, US	5	2001–2015
Hurley, New York, US	3	1994–1997
Duchtess County, New York, US	2	1996