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: 5330663
    Abstract: This invention is directed to neutral and low overbased alkylphenoxy sulfonates having a dialkyl content sufficient to provide an essentially neutral alkylphenoxy sulfonate having a viscosity no greater than about 1000 cSt at a temperature of 100.degree. C. in the presence of 40 weight percent diluent oil.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: July 19, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Robert H. Wollenberg, Richard J. Nelson, John McDonald, Susanne G. Ruelas, Curtis B. Campbell, Kathryn E. Matera
  • Patent number: 5071998
    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: February 9, 1990
    Date of Patent: December 10, 1991
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4965211
    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: November 9, 1983
    Date of Patent: October 23, 1990
    Assignee: Irwin Wieder
    Inventors: Irwin Wieder, Robert H. Wollenberg
  • Patent number: 4927551
    Abstract: Lubricating oil compositions containing a combination of a polyamino alkenyl or alkyl succinimide modified to contain carbamate functionalities and a Group II metal overbased sulfurized alkylphenol unexpectedly possess little, if any, adverse compatability effects on deposits in diesel engines as compared to lubricating oil compositions containing a combination of an unmodified polyamino alkenyl or alkyl succinimides and a Group II metal overbased sulfurized alkylphenol.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: May 22, 1990
    Assignee: Chevron Research Company
    Inventors: Timothy R. Erdman, Michael A. Shippey, Robert H. Wollenberg
  • Patent number: 4904278
    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: May 16, 1986
    Date of Patent: February 27, 1990
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac
  • Patent number: 4840744
    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 26, 1988
    Date of Patent: June 20, 1989
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac, Timothy R. Erdman
  • Patent number: 4802893
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are multiply adducted alkenyl or alkyl succinimides which contain carbamate functionalities.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: February 7, 1989
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac
  • Patent number: 4803002
    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: April 21, 1988
    Date of Patent: February 7, 1989
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4798612
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils, hydraulic oils, and lubricating oils. In particular, disclosed are polyamino alkenyl or alkyl succinimides wherein one or more of the nitrogen of the polyamino moiety is substituted with: ##STR1## wherein R.sub.4 is alkylene of from 1 to 6 carbon atoms; m is an integer of from 0 to 2; R.sub.5 is alkylene of from 2 to 5 carbon atoms; p is an integer of from 1 to 100; R.sub.6 is selected from the group consisting of hydrogen and hydrocarbyl of from 1 to 30 carbon atoms; and with the proviso that if m is one or two then R.sub.6 is hydrogen.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: January 17, 1989
    Assignee: Chevron Research Company
    Inventors: Frank Plavac, Robert H. Wollenberg
  • Patent number: 4783275
    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: May 26, 1987
    Date of Patent: November 8, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4755312
    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: September 19, 1986
    Date of Patent: July 5, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4747965
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are multiply adducted alkenyl or alkyl succinimides which contain carbamate functionalities.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: May 31, 1988
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac
  • Patent number: 4747850
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are multiply adducted alkenyl or alkyl succinimides which contain carbamate functionalities.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: May 31, 1988
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac
  • Patent number: 4747963
    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: May 5, 1987
    Date of Patent: May 31, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4746447
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are hydrocarbyl-substituted polyamines having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: May 24, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4746446
    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: August 27, 1987
    Date of Patent: May 24, 1988
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac, Timothy R. Erdman
  • Patent number: 4729842
    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: February 28, 1986
    Date of Patent: March 8, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4713188
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are hydrocarbyl-substituted amides having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: December 15, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4713187
    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: March 2, 1987
    Date of Patent: December 15, 1987
    Assignee: Chevron Research Company
    Inventors: Thomas F. Buckley, III, Robert H. Wollenberg
  • Patent number: 4702851
    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 (a) first reacting a polyamine with a cyclic carbonate; (b) reaction of this intermediate with an alkenyl or alkyl succinic anhydride; and (c) reaction of the product of (b) with a boron compound.
    Type: Grant
    Filed: October 8, 1986
    Date of Patent: October 27, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg