Patents by Inventor David A. Waldstein

David A. Waldstein 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: 4176076
    Abstract: As novel compounds, monoalkanolamide borates having from 2 to 3 carbon atoms in the alkanol moiety and in which the moiety is substituted or unsubstituted, a method for making and using the same, and the use thereof as rust-inhibitors and as synergistic lubricative-enhancive addenda. The new compounds also have bactericidal and fungicidal properties.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: November 27, 1979
    Inventor: David A. Waldstein
  • Patent number: 4062957
    Abstract: A novel composition constituting a mixture of 1, 3, 5-tri (variegated alkanols) hexahydro-s-triazines and 1, 3, 5 trialkanol hexahydro-s-triazines, where the alkanol moieties have from 1 to 4 carbon atoms. The composition is made by reacting a mixture of monoalkanolamines, preferably in substantially equal gram-molecular proportions, with paraformaldehyde and stripping off the water formed by the reaction. The composition is used by adding a bactericidally or fungicidally effective amount thereof to a carrier which is to be protected against the activity of bacteria or fungi or which is to be applied to a substrate to be so protected. The carrier may be a solid medium, such as solid soap or a liquid medium such as liquid soap, water or an organic liquid, e.g., a liquid alcohol or a liquid hydrocarbon. Typical carriers are cutting oil, hydraulic fluid, varnish, shellac, water- and oil-based paints, methanol, ethanol and propanol, liquid adhesives, cleaners and disinfectants.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: December 13, 1977
    Inventor: David A. Waldstein
  • Patent number: 4022713
    Abstract: As novel compounds, monoalkanolamide borates having from 1 to 3 carbon atoms in the alkanol moiety and in which the moiety is substituted or unsubstituted, a method for making and using the same, and the use thereof as rust-inhibitors and as synergistic lubricative-enhancive addenda. The new compounds also have bactericidal and fungicidal properties.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: May 10, 1977
    Inventor: David A. Waldstein
  • Patent number: 3981998
    Abstract: A novel composition constituting a mixture of 1,3,5-tri (variegated alkanols) hexahydro-s-triazines and 1,3,5-trialkanol hexahydro-s-triazines, where the alkanol moieties have from 1 to 4 carbon atoms. The composition is made by reacting a mixture of monoalkanolamines, preferably in substantially equal gram-molecular proportions, with paraformaldehyde and stripping off the water formed by the reaction. The composition is used by adding a bactericidally or fungicidally effective amount thereof to a carrier which is to be protected against the activity of bacteria or fungi or which is to be applied to a substrate to be so protected. The carrier may be a solid medium, such as solid soap or a liquid medium such as liquid soap, water or an organic liquid, e.g. a liquid alcohol or a liquid hydrocarbon. Typical carriers are cutting oil, hydraulic fluid, varnish, shellac, water- and oil-based paints, methanol, ethanol and propanol, liquid adhesives, cleaners and disinfectants.
    Type: Grant
    Filed: March 8, 1974
    Date of Patent: September 21, 1976
    Inventor: David A. Waldstein
  • Patent number: 3969236
    Abstract: As novel compounds, monoalkanolamide borates having from 1 to 3 carbon atoms in the alkanol moiety and in which the moiety is substituted or unsubstituted, a method for making and using the same, and the use thereof as rust-inhibitors and as synergistic lubricative-enhancive addenda. The new compounds also have bactericidal and fungicidal properties.
    Type: Grant
    Filed: March 13, 1974
    Date of Patent: July 13, 1976
    Inventor: David A. Waldstein
  • Patent number: 3950540
    Abstract: Aqueous compositions containing compounds from the group consisting of bis polyalkoxy (C2-3) monoalkyl (C10-25) tertiary amine oxides and mono polyalkoxy (C2-3) dialkyl (C10-25) tertiary amine oxides, and a method of using such compositions for relieving rectal itching and lessening irritation and swelling of prolapsed and of irritated and swollen external hemorrhoids by topical application.
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: April 13, 1976
    Inventor: David A. Waldstein
  • Patent number: 3950541
    Abstract: Aqueous compositions containing quaternary ammonium polyalkoxy(C2-3) alkyl(C10-25) alkyl(C1-6) salts and a method of using such compositions for relieving rectal itching and lessening irritation and swelling of prolapsed and of irritated and swollen external hemorrhoids by topical application.
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: April 13, 1976
    Inventor: David A. Waldstein