Patents by Inventor Robert H. Wollenberg

Robert H. Wollenberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4670170
    Abstract: Disclosed are polyaminoalkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## R.sub.4 is an alkylene group of from 2 to 3 carbon atoms or an alkylene group of from 2 to 3 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: June 2, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4668246
    Abstract: Disclosed are polyamino alkenyl or alkyl succinimides which have been modified by treatment with a lactone to yield polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydrocarbylcarbonylalkylene group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: May 26, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4666459
    Abstract: Disclosed are polyaminoalkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen or sulfur; R.sub.4 is an alkylene group of from 2 to 3 carbon atoms or an alkylene group of from 2 to 3 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each; and R.sub.5 is hydrogen or alkyl of from 1 to 20 carbon atoms. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: May 19, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4666460
    Abstract: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen, sulfur or R.sub.5 N< wherein R.sub.5 is hydrogen, and alkyl of from 1 to 20 carbon atoms; and R.sub.4 is an alkylene group of from 2 to 5 carbon atoms or an alkylene group of from 2 to 5 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each with the proviso that both W and X are not both oxygen. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: May 19, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4663062
    Abstract: Disclosed are polyaminoalkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen or sulfur; R.sub.4 is an alkylene group of from 2 to 3 carbon atoms or an alkylene group of from 2 to 3 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each; and R.sub.5 is hydrogen or alkyl of from 1 to 20 carbon atoms. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: May 5, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4648886
    Abstract: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils and fuels. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides wherein one or more of the amino nitrogens of the succinimide is substituted with ##STR1## wherein R.sub.4 is hydrocarbyl of from 1 to 30 carbon atoms; R.sub.5 is hydrocarbyl of from 2 to 30 carbon atoms or 13 R.sub.6 --(OR.sub.6).sub.p -- wherein R.sub.6 is alkylene of 2 to 5 carbon atoms and p is an integer from 1 to 100; and m is an integer of from 0 to 1.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: March 10, 1987
    Assignee: Chevron Research Company
    Inventors: Thomas F. Buckley, III, Robert H. Wollenberg
  • Patent number: 4647390
    Abstract: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils and fuels. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides wherein one or more of the amino nitrogens of the succinimide is substituted with ##STR1## wherein R.sub.4 is hydrocarbyl of from 1 to 30 carbon atoms; R.sub.5 is hydrocarbyl of from 2 to 30 carbon atoms or --R.sub.6 --(OR.sub.6).sub.p -- wherein R.sub.6 is alkylene of 2 to 5 carbon atoms and p is an integer from 1 to 100; and m is an integer of from 0 to 1.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: March 3, 1987
    Assignee: Chevron Research Company
    Inventors: Thomas F. Buckley, III, Robert H. Wollenberg
  • Patent number: 4645515
    Abstract: Disclosed are polyamino alkenyl or alkyl succinimides which have been modified by treatment with a lactone to yield polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydroxyalkylene carbonyl group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: February 24, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4624681
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are additives prepared by first reacting a polyamine with a cyclic carbonate followed by reaction of this intermediate with an alkenyl or alkyl succinic anhydride.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: November 25, 1986
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4617138
    Abstract: Disclosed are polyamino alkenyl or alkyl succinimides which have been modified by treatment with a lactone to yield polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydrocarbylcarbonylalkylene group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: October 14, 1986
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4614603
    Abstract: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen, sulfur or R.sub.5 N< wherein R.sub.5 is hydrogen, and alkyl of from 1 to 20 carbon atoms; and R.sub.4 is an alkylene group of from 2 to 5 carbon atoms or an alkylene group of from 2 to 5 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each with the proviso that both W and X are not both oxygen. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: September 30, 1986
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4612132
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are polyamino alkenyl or alkyl succinimides which contain carbamate functionalities.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: September 16, 1986
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac, Timothy R. Erdman
  • Patent number: 4609378
    Abstract: Disclosed are polyaminoalkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## R.sub.4 is an alkylene group of from 2 to 3 carbon atoms or an alkylene group of from 2 to 3 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: September 2, 1986
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4585566
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are nitrogen-containing lubricating oil dispersants having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: April 29, 1986
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4584117
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are additives prepared by first reacting a polyamine with a cyclic carbonate followed by reaction of this intermediate with an alkenyl or alkyl succinic anhydride.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: April 22, 1986
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4450281
    Abstract: Disclosed is a process for the preparation of substituted carboxylic acids and their derivatives in which the synthesis reaction is carried out at least partially thermally in the presence of a furan-type compound. The furan-type compound substantially increases yields and reduces the formation of undesirable resinous by-products.
    Type: Grant
    Filed: December 29, 1982
    Date of Patent: May 22, 1984
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4432907
    Abstract: Species-linked diamine triacetic acids of the formula ##STR1## wherein T is an organic species containing at least one amine, hydroxyl, or thio functional group, L is the residue of at least one of those functional groups and R is a two or more atom long covalent bridge, are disclosed. Methods for their preparation, for the preparation of metal chelates from them and for the use of the chelates are also disclosed. In a preferred embodiment, the metal ions employed in the formation of the chelates are rare earth metal ions capable of forming fluorescent chelates which can in turn be employed in fluoroassay techniques.
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: February 21, 1984
    Assignee: Analytical Radiation Corporation
    Inventors: Irwin Wieder, Robert H. Wollenberg
  • Patent number: 4388471
    Abstract: Disclosed is a process for the preparation of substituted carboxylic acids and their derivatives in which the synthesis reaction is carried out at least partially thermally in the presence of a furan-type compound. The furan-type compound substantially increases yields and reduces the formation of undesirable resinous by-products.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: June 14, 1983
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4352751
    Abstract: Species-linked diamine triacetic acids of the formula ##STR1## wherein T is an organic species containing at least one amine, hydroxyl, or thiol functional group, L is the residue of at least one of those functional groups and R is a two or more atom long covalent bridge, are disclosed. Methods for their preparation, for the preparation of metal chelates from them and for the use of the chelates are also disclosed. In a preferred embodiment, the metal ions employed in the formation of the chelates are rare earth metal ions capable of forming fluorescent chelates which can in turn be employed in fluoroassay techniques.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: October 5, 1982
    Assignee: Analytical Radiation Corporation
    Inventors: Irwin Wieder, Robert H. Wollenberg