Patents by Inventor Lowell B. Lindy

Lowell B. Lindy 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: 5091424
    Abstract: A process for reducing decomposition products released during use or storage from a strong base, Type II anion exchange resin in the hydroxide form by reacting either the chloride form or the sulfate form of the resin with a bisulfite salt before conversion of the resin to the hydroxide form, and the resin prepared from the process.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: February 25, 1992
    Assignee: The Dow Chemical Company
    Inventor: Lowell B. Lindy
  • Patent number: 4562280
    Abstract: The invention is a process for the chloromethylation of an aromatic compound, substituted with an alkyl group and a deactivating moiety, which comprises contacting an aromatic compound, substituted with an alkyl group and a deactivating group, with a chloromethyl alkyl ether in the presence of a catalytic amount of ferric chloride or stannic chloride, under conditions such that an aromatic compound, substituted with an alkyl group, a chloromethyl group, and a deactivating group, wherein the alkyl and chloromethyl groups are on adjacent carbon atoms, is prepared.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: December 31, 1985
    Assignee: The Dow Chemical Company
    Inventors: Jo Ann Gilpin, Lowell B. Lindy
  • Patent number: 4347328
    Abstract: The agglomeration or clumping of the resins in a resin bed comprising a mixture of anion and cation exchange resins is effectively reduced by treating the anion or cation resin with an aqueous dispersion of water-insoluble polymer particles having a particle size of from about 100 to about 800 A and bearing a moiety having opposite ionic character than the resin being treated. For example, the surface charge exhibited by a strong base anion exchange resin bearing pendant quaternary ammonium groups is reduced by contacting the resin with a colloidal aqueous dispersion of a water-insoluble polymer of a monovinylidene aromatic such as styrene and a small amount of a polyvinylidene aromatic such as divinylbenzene which polymer bears pendant sulfonate groups. The thus treated anion exchange resin can subsequently be mixed with a cation exchange resin to form a mixed resin bed having reduced clumping of resins without coincident decrease in efficiency.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: August 31, 1982
    Assignee: The Dow Chemical Company
    Inventors: Zita T. K. Harmon, Lowell B. Lindy
  • Patent number: 4018699
    Abstract: Surfactant compositions include a mixture of a mono-butyl ether of ethylene glycol and a sodium, potassium or magnesium salt of laurylsulfate or mixtures of such salts.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: April 19, 1977
    Assignee: The Dow Chemical Company
    Inventor: Lowell B. Lindy