Patents by Inventor Robert Anton Laitar

Robert Anton Laitar 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).

  • Addition for promotion of bench life extension in a hot box binder system
    Patent number: 5643675
    Abstract: The invention relates to the use of tripotassium citrate monohydrate and other alkali metal salts of polybasic acid as bench life extenders in heat curable hot box foundry mixtures comprising sand, thermosetting binder resin, and a latent acid catalyst composition. In one embodiment, the thermosetting binder resin is a phenolic resole resin modified with urea formaldehyde resin. In another embodiment, the thermosetting binder resin is a furfuryl alcohol resin modified with urea formaldehyde resin.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 1, 1997
    Assignee: Borden, Inc.
    Inventors: William John Ward, Robert Anton Laitar, Bruce Eric Wise
  • Preparation of 3-carboalkoxy or 3-alkanoyl furans
    Patent number: 4025537
    Abstract: A large group of derivatives of 3-furoic acid and 3-furyl ketones can be prepared in high yield by a process which consists of reacting an .alpha.,.beta.-unsaturated ketone having either an .alpha.-carboalkoxy or .alpha.-acyl group with N-bromosuccinimide and thermally cyclizing the resulting bromine containing intermediate.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: May 24, 1977
    Inventors: Richard Allan Kretchmer, Robert Anton Laitar