1
John M Putman: Endoscope stabilizer. Dennis T Griggs, February 9, 1993: US05184601 (326 worldwide citation)

A portable console includes a universal positioning arm for holding a surgical instrument such as an endoscope during a surgical procedure. Coarse adjustment of instrument elevation above an operating table is provided by a reversible drive motor which extends and retracts an upright support shaft f ...


2
Ernest H Price: Pulsed in situ exothermic shock wave and retorting process for hydrocarbon recovery and detoxification of selected wastes. Dennis T Griggs, January 23, 1990: US04895206 (254 worldwide citation)

An active combustion zone is established in situ within a permeable hydrocarbon formation. The permeable formation is periodically charged with a combustible gas, and is thereafter subjected to a high pressure pulse produced by detonation of the combustible gas within an injection well. The periodic ...


3
Kenneth E Kisman, Ben I Nzekwu, Edmund C Lau: Horizontal well gravity drainage combustion process for oil recovery. Alberta Oil Sands Technology and Research, Dennis T Griggs, October 10, 1995: US05456315 (233 worldwide citation)

An in-situ combustion method is provided for the recovery of viscous oil from an oil-bearing reservoir. A linear array of vertical air injection wells is drilled into the reservoir; the wells are completed in the upper portion of the reservoir. One or more gas production wells are provided, remote f ...


4
John B Walling: Flexible production tubing. Dennis T Griggs, June 22, 1982: US04336415 (174 worldwide citation)

A composite, flexible tubing assembly (22) for conveying fluids along plural flow paths is provided by an integrated assembly of a relatively large diameter core tube (32) for conveying production fluid, electrical conductors (42, 44, 46, 48) and a plurality of relatively smaller diameter tubular co ...


5
Colby M Ross, Dhirajlal C Patel, Timothy F LaBruyere: Isolation washpipe for earth well completions and method for use in gravel packing a well. Halliburton Company, Tracy W Druce, Dennis T Griggs, September 6, 1994: US05343949 (147 worldwide citation)

A zonal isolation washpipe system for isolating a production zone which intersects a wellbore from communication with the surface comprises a seal assembly adapted for sealing engagement within the bore of a well packer disposed about the external circumference of one end of a tubular washpipe, a re ...


6
Colby M Ross, Henry L Restarick, Ralph H Echols III, Phillip T Thomas, Dhirajlal C Patel: One trip backwash/sand control system with extendable washpipe isolation. Halliburton Company, Tracy W Druce, Dennis T Griggs, May 9, 1995: US05413180 (146 worldwide citation)

A travel joint and latching assembly is connected below a gravel pack service tool to set an isolation assembly while performing backwashing and gravel pack operations, in a single trip. The travel joint is protected against inadvertent expansion by a positive mechanical lock assembly which isolates ...


7
John M Putman: Endoscope instrument holder. Dennis T Griggs, August 15, 1995: US05441042 (146 worldwide citation)

A portable console includes a universal positioning arm employing a clamp having quick disconnect means for releasably holding a surgical instrument such as an endoscope during a surgical procedure. The clamp includes a shaft with a bayonet connector disposed thereon, for lockably engaging a collar ...


8
Steven R Carson, Jerry D Gandre: Face plate having press-fit attachment to electrical switches, outlets and the like. Lightolier, Dennis T Griggs, February 23, 1993: US05189259 (119 worldwide citation)

A two-piece face plate assembly includes a coupling plate which is mounted between the yoke strap of a wiring device and the mounting flange of a wall box. The coupling plate has a central opening for receiving the wiring device and has first and second index pins formed at spaced locations along th ...


9
Robert D Kirkpatrick: Bar code locator for video scanner/reader system. Image Recognition Equipment Corporation, Dennis T Griggs, Richard L Schwartz, September 18, 1990: US04958064 (108 worldwide citation)

A target locator having a group of uniquely configured, high contrast elements is displayed adjacent one or more target bar codes for increasing the probability of acquiring a target bar code of interest and extending the range at which a target bar code of interest can be acquired and read. The hig ...


10
Perry C Shy, Christopher A Dines: Dedicated perforatable nipple with integral isolation sleeve. Halliburton Company, Tracy W Druce, Dennis T Griggs, November 8, 1994: US05361843 (106 worldwide citation)

A production nipple is suspended within an uncased bore hole in a slimhole/monobore completion. A deposit of cement is conveyed through the nipple and is spotted in the annulus across the face of the uncased well bore, with the nipple and cement deposit thereafter being perforated by a small diamete ...