Patents by Inventor David Craig Dalrymple

David Craig Dalrymple 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).

  • Method for inhibiting corrosion using phosphorous acid
    Patent number: 6706669
    Abstract: The present invention relates to a method for inhibiting high temperature of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of phosphorous acid, typically up to 1000 wppm, to the metal surface.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: March 16, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
  • Method for inhibiting corrosion using certain phosphorus and sulfur-free compounds
    Patent number: 6593278
    Abstract: The present invention relates to a method for inhibiting corrosion of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of certain sulfur and phosphorus-free aromatic compounds substituted with nitrogen, containing functional groups at the 5- or 3, 5-position, typically up to 1000 wppm, to the metal surface.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: July 15, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Mohsen S. Yeganeh, Shawn Michael Dougal, Guido Sartori, David Craig Dalrymple, Cheayao Zhang, Saul Charles Blum, Liza Marie Monette
  • Method for inhibiting corrosion using 4-sulfophthalic acid
    Patent number: 6583091
    Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of 4-sulfophthalic acid, typically up to 1000 wppm, to the metal surface.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 24, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
  • Method for inhibiting corrosion using certain aromatic acidic species
    Patent number: 6559104
    Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of an additive aromatic compound tri-substituted with acidic functionalities selected from 5-hydroxyisophthalic acid and 1,3,5-benzenetricarboxylic acid, typically up to 1000 wppm, to the metal surface.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: May 6, 2003
    Assignee: ExxonMobil Research and Engineering Co.
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
  • Method for inhibiting corrosion using triphenylstibine
    Patent number: 6537950
    Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of triphenylstibine, typically up to 1000 wppm, to the metal surface.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: March 25, 2003
    Assignee: ExxonMobil Research and Engineering Co.
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh
  • METHOD FOR INHIBITING CORROSION USING TRIPHENYLSTIBINE
    Publication number: 20030012682
    Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of triphenylstibine, typically up to 1000 wppm, to the metal surface.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh
  • Method for inhibiting corrosion using certain phosphorus and sulfur-free compounds
    Publication number: 20030012681
    Abstract: The present invention relates to a method for inhibiting corrosion of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of certain sulfur and phosphorus-free aromatic compounds substituted with nitrogen, containing functional groups at the 5- or 3, 5-position, typically up to 1000 wppm, to the metal surface.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Mohsen S. Yeganeh, Shawn Michael Dougal, Guido Sartori, David Craig Dalrymple, Cheayao Zhang, Saul Charles Blum, Liza Marie Monette
  • METHOD FOR INHIBITING CORROSION USING CERTAIN AROMATIC ACIDIC SPECIES
    Publication number: 20030013621
    Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of an additive aromatic compound tri-substituted with acidic functionalities selected from 5-hydroxyisophthalic acid and 1,3,5-benzenetricarboxylic acid, typically up to 1000 wppm, to the metal surface.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
  • Method for inhibiting corrosion using phosphorous acid
    Publication number: 20030012683
    Abstract: The present invention relates to a method for inhibiting high temperature of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of phosphorous acid, typically up to 1000 wppm, to the metal surface.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
  • METHOD FOR INHIBITING CORROSION USING 4-SULFOPHTHALIC ACID
    Publication number: 20030012684
    Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of 4-sulfophthalic acid, typically up to 1000 wppm, to the metal surface.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
  • Process for extraction of naphthenic acids from crudes
    Patent number: 6281328
    Abstract: The invention relates to processes for treating acidic crudes or fractions thereof to reduce or eliminate their acidity by addition of effective amounts of crosslinked polymeric amines having a pKa of greater than 9 such as polyvinyl amine and anionic exchange resins having amino groups. The process has utility for crude processing.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: August 28, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Guido Sartori, David William Savage, Bruce Henry Ballinger, David Craig Dalrymple
  • Process for treatment of petroleum acids with ammonia
    Patent number: 6258258
    Abstract: The present invention is a process for decreasing the acidity of a starting acidic crude oil by contacting an acidic crude with an effective excess of ammonia dissolved in said crude to form an ammonia-continuous oil discontinuous phase at a temperature and conditions sufficient to form the corresponding amide of the naphthenic acids. The process is useful in the processing of acidic crudes.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: July 10, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, David William Savage, William Neergaard Olmstead, Winston Karl Robbins, David Craig Dalrymple, Bruce Henry Ballinger
  • Co2 treatment to remove organically bound metal ions from crude
    Patent number: 6187175
    Abstract: The present invention is a process to remove a +2 ionic charged, organically bound metal from a petroleum feed. The process includes contacting feed with aqueous carbon dioxide in the essential absence for emulsion formation.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: February 13, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Saul Charles Blum, Guido Sartori, Martin Leo Gorbaty, David William Savage, David Craig Dalrymple, William Edward Wales
  • Process for decreased the acidity of crudes using crosslinked polymeric amines (LAW871)
    Patent number: 6121411
    Abstract: The invention relates to processes for treating acidic crudes or fractions thereof to reduce or eliminate their acidity by addition of effective amounts of crosslinked polymeric amines. The process has utility for crude processing.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: September 19, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, David William Savage, Bruce Henry Ballinger, David Craig Dalrymple