1
Dennis J Graue: Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking. World Energy Systems Incorporated, Arthur F Zobal, Geoffrey A Mantooth, December 11, 2001: US06328104 (288 worldwide citation)

A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more vertical injection boreholes and one or more vertical production boreholes in which multiple, uncased, horizontal bo ...


2
Charles H Ware, Leslie C Rose, Joseph C Allen: Recovery of oil by in situ hydrogenation. World Energy Systems, Arthur F Zobal, July 1, 1986: US04597441 (278 worldwide citation)

In a method of recovering petroleum from underground formations penetrated by a production well, superheated steam and then hot hydrogen are injected by way of the well into a preheated formation zone next to the well. The hydrogen is injected under sufficient pressure to cause hydrogenation of the ...


3
Charles H Ware, Leslie C Rose: Recovery of oil by in-situ combustion followed by in-situ hydrogenation. WorldEnergy Systems, Arthur F Zobal, September 8, 1987: US04691771 (250 worldwide citation)

Oxygen is injected into a petroleum bearing subsurface formation penetrated by production well and the petroleum in the formation is subjected to in-situ combustion to heat the formation in a zone surrounding the production well. After heating by the in-situ combustion, heated hydrogen is injected i ...


4
Ross F Housholder: Molding process. Hico Western Products Co, Arthur F Zobal, January 27, 1981: US04247508 (221 worldwide citation)

A molding process for forming a three-dimensional article in layers. In one embodiment, a matrix comprising a planar grid-like member having a plurality of openings formed therethrough is employed. In an initial layer, casting material and mold material are deposited in selected openings to form a p ...


5
Emsley A Davis: Apparatus and method for repairing and preventing para-stomal hernias. Arthur F Zobal, James C Fails, Geoffrey A Mantooth, August 8, 1989: US04854316 (173 worldwide citation)

A sheet-like inner member formed of prosthetic mesh has an opening formed therethrough. A tubular member formed of prosthetic mesh has two opposite ends with an opening extending therethrough between its two ends. The inner member is connected to the tubular member at or near one end thereof such th ...


6
Emsley A Davis: Retention suture apparatus. Arthur F Zobal, May 26, 1987: US04667675 (165 worldwide citation)

The retention suture apparatus is employed for maintaining a wound closed with a retention suture. The apparatus includes a relatively flat and stiff bridging member adapted to be placed across the wound. One end of the bridging member is adapted to have one end of the suture coupled thereto with th ...


7
Johnny Swinson deceased, by Sueanne Walker executrix, Terry J James: Horizontal and vertical take off and landing unmanned aerial vehicle. Arthur F Zobal, April 6, 1999: US05890441 (107 worldwide citation)

A semiautonomously directed, autonomously controlled, gyroscopically stabilized, horizontal or vertical take off and landing (HOVTOL) flying apparatus employing two vertical lift devices equally and longitudinally spaced from the center of gravity of the apparatus; continuously integrated with a dri ...


8
Emsley A Davis: Compressive intramedullary nail. Arthur F Zobal, Geoffrey A Mantooth, October 15, 1991: US05057103 (107 worldwide citation)

A nail is inserted into the medullary canal of a fractured bone to fixate the bone segments in order to promote healing. The nail provides compressive force to close the fracture and further promote healing. The nail has an outer member and an inner member that is slidable within the outer member. T ...


9
Joseph L Kachnik: Durable, high-strength proppant and method for forming same. James C Fails, William T Wofford, Arthur F Zobal, March 31, 1987: US04654266 (101 worldwide citation)

What is disclosed is a method of forming a high-strength proppant that resists the deleterious effects of high temperature saline environments characterized by the steps of forming a plurality of particles of propping agent; and coating particles with a thin high-strength covering in a fluidized bed ...


10
Robert A Williams: Paint ball gun. Arthur F Zobal, April 9, 1996: US05505188 (83 worldwide citation)

A bolt having an opening formed therethrough is slidably located in the bore of the gun. The bolt is held in a rear position by a sear with the bolt opening closed by a valve which extends into the bolt opening and engages a rear facing bolt seat. A passageway extends into the bolt opening by way of ...