William Theodore Elias

49772201, Dec 11, 1990

Feb 20, 1990

7/485925

Thomas K. Dougherty - Playa del Rey CA
Susan L. Oldham - Torrance CA
William E. Elias - Redondo Beach CA

Hughes Aircraft Company - Los Angeles CA

C08G 5902
C08G 5922
C08C 1906
C08C 1940

5253323

Epoxy end-capped oligomers of 1,3-diolefin compounds of Formula I ##STR1## These oligomers are formed by: (a) reacting a 1,3-diolefin compound having 4 to 12 carbon atoms per molecule with a difunctional initiator comprising anionic reactive sites to form an intermediate living oligomer comprising two anionic end groups; and (b) reacting the intermediate living oligomer with a halohydrin compound to epoxidize the two anionic end groups and form the desired oligomer. The oligomers are subsequently reacted with an epoxidizing agent to form a polymer having epoxy-derived linkages at regular intervals along the chain of the polymer.

51397048, Aug 18, 1992

Feb 12, 1991

7/654866

Wilson A. Holland - Playa del Rey CA
William E. Elias - El Segundo CA
Francis O. Duane - Palos Verdes Estate CA

Hughes Aircraft Company - Los Angeles CA

H01B 106

252521

A fluxless solder for application to metal surfaces which include contaminants such as metal oxides. The fluxless solder includes a reducing agent which reacts with interfering metal oxides to form essentially inert compounds which require no further cleaning. Reducing agents, such as lithium, calcium, strontium and cesium are disclosed for use in lead-tin solders, in amounts ranging from about 0. 5 to 10 atom percent. Various methods for forming the fluxless solder are also disclosed.

49160389, Apr 10, 1990

Aug 29, 1988

7/237816

Susan L. Oldham - Torrance CA
William E. Elias - Redondo Beach CA
Stephen J. Bigus - Long Beach CA

Hughes Aircraft Company - Los Angeles CA

B32B 904

428447

A new group of silane compounds in which silicon atoms are linked together by a hydrocarbon chain and which comprise phenyl groups substituted with an epoxy group or an ethenyl group. The compounds of the present invention have the formula ##STR1## where R. sub. 1 is selected from the group consisting of: (a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and (b) a group having the formula ##STR2## where n=1 to 3 m=0 to 5; R. sub. 2 and R. sub. 2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group; and R. sub. 3 is selected from the group consisting of: ##STR3## where R. sub. 4, R. sub. 5, and R. sub. 6 ae each selected from the group consisting of H, an alkyl group containing 1 to 4 carbon atoms, and an aryl group; and n=0 to 10.

53914600, Feb 21, 1995

Jul 12, 1993

8/089544

Thomas K. Dougherty - Playa Del Rey CA
William E. Elias - El Segundo CA
Timothy C. Thelander - Riverside CA
Mahesh N. Bhavnani - Diamond Bar CA

Hughes Aircraft Company - Los Angeles CA

G03C 500

430269

A resin composition for investment casting contains a moderate boiling temperature liquid inert diluent, having a boiling point in the range of about 200. degree. to 300. degree. C. The presence of the liquid inert diluent allows the resin to be used as a pattern, or model, in investment casting by preventing breaking of the mold during burnout of the resin. Any of the conventional resins suitable for stereolithography may be employed in the practice of the invention. To the resin is added a moderate boiling point solvent in the amount of about 5 to 30 wt %. Use of the moderate boiling point solvent in conjunction with the resin allows the pattern to shrink and crack at moderate temperature before final burnout. The shrinkage occurs faster and at a lower temperature as compared to the prior art.

53290364, Jul 12, 1994

Sep 2, 1992

7/939326

Thomas K. Dougherty - Playa Del Rey CA
William E. Elias - El Segundo CA

Hughes Aircraft Company - Los Angeles CA

C08F 708

556453

Novel acetylene-terminated silicone monomers with (a) silane (Si--H) functionalities, (b) silanol (Si--OH) functionalities, or (c) (alpha,omega)phenylethynyl terminated siloxanes, and a novel synthetic route. The (alpha,omega)phenylethynyl-terminated siloxane monomers are prepared, starting with 1,3-bromobenzene, which is converted to 3-TMS-ethynylbromobenzene, where TMS represents the trimethylsilyl group, by reacting 1,3-dibromobenzene with trimethylsilylacetylene and triethylamine in the presence of a palladium catalyst. The 3-bromo-TMS protected phenyl acetylene is then reacted with an alkyllithium compound, such as n-butyllithium, or with magnesium to form the corresponding lithio or Grignard compound, respectively, followed by reaction with a halogenated compound, such as chlorodimethylsilane, to form 3-trimethylsilyl-ethynylphenyldimethyl silane. Next, the TMS protected ethynylphenyl silane is subjected to deprotection and methanolysis of the Si--H bond to form 3-ethynylphenyldimethyl methoxy silane, employing methanol. This silane is then hydrolyzed to form the corresponding silanol.

48895857, Dec 26, 1989

May 31, 1988

7/205010

Richard N. Leyden - Topanga CA
Robert Lawrence - Malibu CA
William E. Elias - Redondo Beach CA

Hughes Aircraft Company - Los Angeles CA

B44C 122

156630

Methods for forming small diameter holes in polyimide/Kelvar. RTM. substrates utilize hot concentrated sulfuric acid and then honing, as necessary, with liquid abradant slurries to smooth uneven edges of the openings.

48746436, Oct 17, 1989

Jul 13, 1988

7/218177

Susan L. Oldham - Torrance CA
William E. Elias - Redondo Beach CA
Stephen J. Bigus - Long Beach CA

Hughes Aircraft Company - Los Angeles CA

B05D 304
B05D 310
B32B 904

427340

A method for rendering a substrate resistant to erosion by a plasma comprising oxygen by providing on the surface of the substrate a layer of a cured polymer of a compound having the formula ##STR1## where: R. sub. 1 is selected from the group consisting of: (a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and (b) a group having the formula ##STR2## wherein n=1 to 3 m=0 to 5 R. sub. 2 and R. sub. 2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group; and R. sub. 3 comprises: ##STR3## n=0 to 10.

47882689, Nov 29, 1988

May 5, 1987

7/046012

Susan L. Oldham - Torrance CA
William E. Elias - Redondo Beach CA

Hughes Aircraft Company - Los Angeles CA

C08G 7704

528 27

Epoxysilicone compounds are prepared by first reacting a dibromobenzene compound with magnesium in anhydrous ether solvent to form a Grignard reagent and subsequently reacting the Grignard reagent with allyl bromide to form a (bromophenyl)propene compound. Next, the (bromophenyl)propene compound is converted to the corresponding Grignard reagent, which is then reacted with a compound of the formula I below ##STR1## where n=1 to 6, R. sub. 1 and R. sub. 2 are each chosen from the group consisting of a C. sub. 1 to C. sub. 4 alkyl group, a substituted aryl group, and an unsubstituted aryl group. in tetrahydrofuran solvent to form an allyl-terminated silicone compound of formula II below ##STR2## Finally, the allyl-terminated silicone compound is reacted with a chosen epoxidizing agent to form the epoxysilicone compound of formula III below. ##STR3##.