Patents by Inventor Jacob Ben Angelo

Jacob Ben Angelo 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).

  • Manufacture of electrical oil enriched with hydrofined gas oil for improved oxidation and electrical resistance
    Patent number: 6355850
    Abstract: Electrical oils having improved uninhibited oxidation and electrical resistance are derived by blending a substantially nitrogen and sulfur free paraffinic or naphthenic base oil with a hydrofined light gas oil having a sulfur to nitrogen weight ratio of greater than 100:1 wherein the hydrofined light gas oil is added to the base oil in an amount sufficient to provide a blend having greater than about 0.03 wt % sulfur.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: March 12, 2002
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob Ben Angelo, Thomas Lynn Bays
  • High temperature, high efficiency electrical and transformer oil
    Patent number: 6083889
    Abstract: An oil composition useful as an electrical or transformer oil is provided. The composition comprises a major amount of a paraffinic oil having a Cleveland open cup flash point of more than about 200.degree. C. and an effective amount of an additive system including at least one hindered phenolic antioxidant and a tolyltriazole metal deactivator.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: July 4, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob Ben Angelo, Christopher Jeffrey Still Kent
  • Method for making a process oil by using aromatic enrichment with extraction followed by single stage hydrofinishing (LAW764)
    Patent number: 6080302
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a paraffinic rich feed to provide a blended feed. The blended feed is then extracted with an aromatic extraction solvent to yield a raffinate which subsequently is hydrotreated to provide a process oil.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: June 27, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Keith K. Aldous, Jacob Ben Angelo, Joseph Philip Boyle
  • Method for making a process oil by using aromatic enrichment and two pass hydrofinishing
    Patent number: 6024864
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a paraffinic rich feed to provide a blended feed. The blended feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to hydrogen sulfide and ammonia. After stripping, the feed is subjected to a second hydrotreating stage to provide a process oil.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 15, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Keith Kaluna Aldous, Jacob Ben Angelo, Joseph Philip Boyle, Bruce M. Jarnot, Wayne E. Hanson
  • Method for manufacturing a process oil with improved solvency
    Patent number: 5853569
    Abstract: A method for producing a process oil is provided in which a napthenic rich feed is enriched with an aromatic extract oil. The enriched feed is then subjected to a solvent extraction thereby providing a process oil.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: December 29, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Keith K. Aldous, Jacob Ben Angelo, Joseph Philip Boyle
  • Process oils and manufacturing process for such using aromatic enrichment and two pass hydrofinishing
    Patent number: 5846405
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a napthenic rich feed. The combined feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to hydrogen sulfide and ammonia. After stripping the feed is subjected to a second hydrotreating stage to provide a process oil.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: December 8, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Keith Kaluna Aldous, Jacob Ben Angelo, Joseph Philip Boyle, Bruce M. Jarnot, Wayne E Hanson
  • Process oils and manufacturing process for such using aromatic enrichment with extraction followed by single stage hydrofinishing
    Patent number: 5840175
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a naphthenic rich feed to provide a blended feed. The blended feed is then extracted with an aromatic extract solvent to yield a raffinate which subsequently is hydrotreated to provide a process oil.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: November 24, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Keith K. Aldous, Jacob Ben Angelo, Joseph Philip Boyle