1
Stacey I Zones, D I Holtermann, R A Innes, T A Pecoraro, D S Santilli, J N Ziemer: Zeolite SSZ-25. Chevron Research Company, S R La Paglia, T G DeJonghe, V J Cavalieri, May 2, 1989: US04826667 (216 worldwide citation)

A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.


2
Jaime Lopez, Eugene A Pasek: Process for preparing heavy oil hydroprocessing slurry catalyst. Chevron Research Company, S R LaPaglia, T G DeJonghe, O T Dickinson, December 1, 1987: US04710486 (69 worldwide citation)

A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form a water soluble oxygen-containing compound such as aqueous ammonium mo ...


3
Jaime Lopez, Eugene A Pasek: Heavy oil hydroprocessing with Group VI metal slurry catalyst. Chevron Research Company, Q T Dickinson, T G DeJonghe, August 15, 1989: US04857496 (43 worldwide citation)

A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form water soluble compounds such as aqueous ammonium molybdates or tungsta ...


4
Jonas P Harrison: Vanadium-phosphorus oxide oxidation of N-butane to maleic anhydride. Chevron Research Company, G F Magdeburger, John Stoner Jr, T G DeJonghe, October 12, 1976: US03985775 (42 worldwide citation)

A high-activity vanadium-phosphorus mixed-oxide catalyst is prepared by a method requiring heating the catalyst precursor at about 350.degree.-410.degree.C. to drive off at least a portion of the water of hydration, and then at a higher temperature. The catalyst is especially useful for oxidation of ...


5
Robert L Hudson: Polypropylene blend compositions. Chevron Research, J A Buchanan Jr, T G DeJonghe, L S Squires, October 20, 1981: US04296022 (33 worldwide citation)

A blend of different polypropylene resins which is particularly useful in melt-spinning fine denier yarns. The blend can be melt-extruded into pellets having better spinning properties for melt-spinning fine denier yarns than the individual resins.


6
C Richard Hsieh, Roger K Clifford: Solvent extraction process for recovering bitumen from tar sand. Chevron Research Company, S R LaPaglia, T G DeJonghe, Q Todd Dickinson, June 30, 1987: US04676889 (33 worldwide citation)

Bitumen recovered from tar sand by direct solvent extraction followed by washing of the sand tailings with countercurrent solvent flow and a solvent/aqueous phase separation step to recover solvent and residual bitumen.


7
Malcolm Scott Singer: N-alkyl or alkoxy-N-substituted hydrocarbyl urea. Chevron Research Company, J A Buchanan Jr, T G DeJonghe, Raymond Owyang, September 5, 1978: US04111683 (31 worldwide citation)

Compounds of the formula ##STR1## wherein R is aliphatic hydrocarbyl, alicyclic hydrocarbyl or aryl suitably substituted, if desired, or a heterocyclic group, R.sup.1 is hydrogen or alkyl, R.sup.2 is alkyl or alkoxy, R.sup.3 is ##STR2## wherein a is 0 or 1, R.sup.4 is hydrogen or CW'.sub.3, the W' b ...


8
Robert L Batchelor, Gene E Kellum: Production of blow molding polyethylene resin. Chevron Chemical Company, C D Holland, T G DeJonghe, December 5, 1995: US05473027 (31 worldwide citation)

Disclosed is a process for making polyethylene resin by reacting ethylene or ethylene and a C.sub.3 -C.sub.8 alpha-olefin in the presence of a CrO.sub.3 /TiO.sub.2 catalyst on a silica support in a gas-phase polymerization reactor and in the presence of a catalyst productivity reduction agent such a ...


9
Stephen J Miller: Dehydrogenation of isobutane over a zeolitic catalyst. Chevron Research Company, S R La Paglia, T G DeJonghe, P L McGarrigle Jr, February 23, 1988: US04727216 (31 worldwide citation)

Isobutene is produced by contacting isobutane with a sulfided, type L zeolitic catalyst containing platinum, tin, barium, and an inorganic binder. The isobutane is contacted with the catalyst in the presence of a sulfur-containing gas at a temperature of from 850.degree. F. to 1250.degree. F., a pre ...


10
Laroy H Edwards: Insecticidal 2-substituted-imino-3-alkyl-5-dialkoxyphosphinothioyloxy-6H-1,3,4-thiadi azine. Chevron Research Company, Dix A Newell, T G DeJonghe, March 13, 1979: US04144335 (31 worldwide citation)

Thiadiazine compounds of the formula (I) ##STR1## wherein R.sup.1 is alkyl, R.sup.2 is alkyl, cycloalkyl, alkenyl or aryl, R.sup.3 is alkyl and R.sup.4 is alkyl, are useful as insecticides. The thiadiazine compounds are prepared by the addition of a dialkylhalothiophosphate to a tetrahydro-6H-1,3,4- ...