1
Burton M Casad, Charles R Clark, Lisa A Cantu, D Philip Cords, Edward F McBride: Process for the preparation of fluid loss additive and gel breaker. Conoco, January 22, 1991: US04986355 (204 worldwide citation)

A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. ...


2
Charles R Clark, Donald L Whitfill, D Philip Cords, Edward F McBride, Harold E Bellis: Placement process for oil field chemicals. Conoco, E I DuPont de Nemours and Company, January 22, 1991: US04986353 (162 worldwide citation)

Oil field chemicals are incorporated in polymeric particles of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The particles are introduced into an oil w ...


3
Robert R Matthews, Charles R Clark: Inhibition of hydrate formation. Conoco, August 15, 1989: US04856593 (27 worldwide citation)

Stoppage of gas-water streams due to the formation of gas hydrates is prevented by incorporating in such streams a surface active agent which inhibits the formation of gas hydrates and/or the agglomeration of hydrate crystallites into large crystalline masses.


4
Vincent Bryan, Alex Kunzler, Charles R Clark, Robert Conta, Carlos E Gil: Implantable joint prosthesis. January 5, 2010: US07641692 (26 worldwide citation)

The invention relates to a surgical implant that provides an artificial diarthroidal-like D joint, suitable for use in replacing any joint, but particularly suitable for use as an intervertebral disc endoprosthesis. The invention contains two rigid opposing shells, each having an outer surface adapt ...


5
Gifford G McClaflin, Charles R Clark: Method of transporting viscous hydrocarbons. Conoco, Bayless E Rutherford Jr, September 8, 1981: US04287902 (19 worldwide citation)

An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of a combination of an alkaryl sulfonate having a molecular weight of 415 to 470 and a C.sub.1 -C.sub.4 alcohol.


6
Charles R Clark: Separator arrangement for start-up system. Foster Wheeler Energy Corporation, Marvin A Naigur, John E Wilson, November 16, 1976: US03992172 (17 worldwide citation)

A fluid separating apparatus in which an inlet is disposed in the upper portion of a substantially vertically oriented cylindrical housing for receiving a mixture of liquid and vapor. The mixture is separated in the housing by the application of centrifugal forces to the mixture and the liquid exits ...


7
Vincent Bryan, Alex Kunzler, Charles R Clark, Robert Conta, Carlos E Gil: Implantable joint prosthesis. Warsaw Orthopedic, January 10, 2012: US08092542 (13 worldwide citation)

The invention relates to a surgical implant that provides an artificial diarthroidal-like joint, suitable for use in replacing any joint, but particularly suitable for use as an intervertebral disc endoprosthesis. The invention contains two rigid opposing shells, each having an outer surface adapted ...


8
Charles R Clark: Anti-convulsant. Research Corporation, Shoemaker and Mattare, April 5, 1983: US04379165 (13 worldwide citation)

New amino-benzamides and their use for the treatment of epilepsy.


9
Patrick H Fitzgerald, Nicholas O Wolf, Charles R Clark, D Philip Cords: Emulsion breaking using alkylphenol-polyethylene oxide-acrylate polymer coated coalescer material. Conoco, Richard W Collins, October 20, 1992: US05156767 (12 worldwide citation)

A method of emulsion breaking comprising contacting an emulsion with a substrate having adhered thereto an alkylphenol-polyethylene oxide-acrylate polymer. The emulsion breaking material is used to separate water-in-oil emulsion by coalescence.


10
Oliver C Kerfoot, Charles R Clark, Carl D Kennedy: Method using overbased branched-chain alkylaromatic sulfonates as waterflood additives. Continental Oil Company, F Lindsey Scott, January 20, 1976: US03933201 (12 worldwide citation)

An improved anionic waterflood additive is prepared by alkylating an aromatic hydrocarbon such as benzene with a branched-chain alkene having about 10 to about 35 carbon atoms such as a propylene tetramer dimerization reaction product in the presence of an alkylation catalyst such as AlCl.sub.3 ; su ...