Majid R Ahmadi, 6563 Blackhawk Club Ct, Danville, CA 94506

6475251, Nov 5, 2002

Feb 28, 2001

09/796876

Majid R. Ahmadi - Pinole CA

Chevron Oronite Company LLC - San Ramon CA

C10L 118

44387, 44399, 44400, 44433

A method for controlling engine deposits in a direct injection spark ignition gasoline engine which comprises operating the engine with a fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and an effective deposit-controlling amount of a fuel additive composition comprising: (a) an aromatic ester compound of the formula: or a fuel soluble salt thereof, wherein R is hydroxy, nitro or â(CH ) âNR R , wherein R and R are independently hydrogen or lower alkyl having 1 to 6 carbon atoms and x is 0 or 1; R is hydrogen, hydroxy, nitro or âNR R , wherein R and R are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R and R are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; and R is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000; and (b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline range.

6511519, Jan 28, 2003

Sep 29, 2000

09/675504

Majid R. Ahmadi - Pinole CA
James A. Gray - Novato CA
Henk P. M. Sengers - Schiedam, NL

Chevron Oronite Company LLC - San Ramon CA

C10L 118

44385, 44415, 44443

A fuel additive composition comprising: a) a Mannich condensation product of (1) a high molecular weight alkyl-substituted hydroxyaromatic compound wherein the alkyl group has a number average molecular weight of from about 300 to about 5,000 (2) an amine which contains an amino group having at least one active hydrogen atom, and (3) an aldehyde, wherein the respective molar ratio of reactants (1), (2), and (3) is 1:0. 1-10:0. 1-10; b) a hydrocarbyl-terminated poly(oxyalkylene) monool having an average molecular weight of about 500 to about 5,000, wherein the oxyalkylene group is a C to C oxyalkylene group and the hydrocarbyl group is a C to C hydrocarbyl group; and c) a carboxylic acid as represented by the formula: or anhydride thereof, wherein R represents a hydrocarbyl group having about 2 to about 50 carbon atoms, and x represents an integer of 1 to about 4. The unique fuel additive composition provides excellent control of engine deposits, particularly engine intake system deposits, such as intake valve deposits. The improved performance may be attributable to the improved compatibility of the fuel additive composition of the present invention.

6616776, Sep 9, 2003

Nov 6, 2002

10/289799

Majid R. Ahmadi - Pleasant Hill CA
Damon C. Vaudrin - Vacaville CA

Chevron Oronite Company LLC - San Ramon CA

B08B 304

134 40, 134 39, 134 42, 510187, 510421, 510499, 510505, 510506

Disclosed are methods for removing engine deposits in a recprocating internal combustion engine by introducing a cleaning composition into an air-intake manifold of a warmed-up and idling reciprocating internal combustion engine and running the engine while the cleaning composition is being introduced. One such cleaning composition suitable for these methods comprises a first solution containing a mixture of: (a) a phenoxy mono- or poly(oxyalkylene) alcohol; (b) at least one solvent selected from (1) an alkoxy mono- or poly(oxyalkylene) alcohol and (2) an aliphatic or aromatic organic solvent; and (c) at least one nitrogen-containing detergent additive; and a second solution containing a mixture of: (d). a phenoxy mono- or poly(oxyalkylene) alcohol; (e) a cyclic carbonate; and (e) water.

6651604, Nov 25, 2003

Jan 22, 2003

10/349581

Majid R. Ahmadi - Pleasant Hill CA
Damon C. Vaudrin - Vacaville CA

Chevron Oronite Company LLC - San Ramon CA

F02B 114

12318421, 123 50 R, 123198 A, 12318448

Disclosed is an apparatus and application tool useful for removing engine deposits in a reciprocating internal combustion engine by directing a substantial portion of a cleaning composition to an interior cavity of the engine through an access port wherein the point of delivery is independent of the access port and positionable within the interior of the engine cavity.

6652667, Nov 25, 2003

Jan 23, 2002

10/056123

Majid R. Ahmadi - Pleasant Hill CA
Damon C. Vaudrin - Vacaville CA

Chevron Oronite Company LLC - San Ramon CA

B08B 304

134 36, 134 39, 134 40, 134 42, 510187, 510421, 510433, 510499, 510505, 510506

Disclosed are methods for removing engine deposits in a gasoline internal combustion engine by introducing a cleaning composition into an air-intake manifold of a warmed-up and idling gasoline internal combustion engine and running the engine while the cleaning composition is being introduced. One such cleaning composition suitable for these methods comprises (a) a phenoxy mono- or poly(oxyalkylene) alcohol; (b) at least one solvent selected from (1) an alkoxy mono- or poly(oxyalkylene) alcohol and (2) an aliphatic or aromatic organic solvent; and (c) at least one nitrogen-containing detergent additive.

2005026, Dec 8, 2005

Jun 4, 2004

10/861246

Majid Ahmadi - Pleasant Hill CA, US
Damon Vaudrin - Vacaville CA, US

C10L001/18

044412000

Disclosed is a fuel composition for the control and/or removal of persistent engine deposits. Said fuel composition comprises a major amount of hydrocarbons boiling in the gasoline range fuel, a hydrocarbyl-substituted polyoxyalkylene amine and a glycol ether component; and is useful for the prevention and control engine deposits.

5851242, Dec 22, 1998

Apr 30, 1997

8/846717

Richard E. Cherpeck - Cotati CA
Jack E. Morris - El Cerrito CA
Majid R. Ahmadi - Pinole CA

Chevron Chemical Company - San Ramon CA

C10L 122

44425

A fuel additive composition comprising: (a) a polyalkylphenoxyaminoalkane having the formula: ##STR1## or a fuel soluble salt thereof, wherein R is a polyalkyl group having an average molecular weight in the range of about 600 to 5,000; R. sub. 1 and R. sub. 2 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; and A is amino, N-alkyl amino having about 1 to about 20 carbon atoms in the alkyl group, N,N-dialkyl amino having about 1 to about 20 carbon atoms in each alkyl group, or a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms; and (b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range. The fuel additive compositions of this invention are useful as fuel additives for the prevention and control of engine deposits.

5749929, May 12, 1998

Apr 7, 1997

8/833463

Richard E. Cherpeck - Cotati CA
Jack E. Morris - El Cerrito CA
Majid R. Ahmadi - Pinole CA

Chevron Chemical Company - San Ramon CA

C10L 122
C10L 118

44387

A fuel additive composition comprising: (a) an aromatic ester compound of the formula: ##STR1## or a fuel soluble salt thereof, wherein R is hydroxy, nitro or --(CH. sub. 2). sub. x --NR. sub. 5 R. sub. 6, wherein R. sub. 5 and R. sub. 6 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms and x is 0 or 1; R. sub. 1, is hydrogen, hydroxy, nitro or --NR. sub. 7 R. sub. 8, wherein R. sub. 7 and R. sub. 8 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R. sub. 2 and R. sub. 3 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; and R. sub. 4 is a polyalkyl group having an average molecular weight in the range of about 450 to 5,000; and (b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range. The fuel additive compositions of this invention are useful as fuel additives for the prevention and control of engine deposits.