Patents by Inventor Leonard Pearlstein

Leonard Pearlstein 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).

  • Publication number: 20060027085
    Abstract: Once one has taken into account basic shooting/launching issues like breach, barrel, and projectile, work on electrostatic forces can begin. Firstly, safety is a must, the static generator is not lethal but the capacitors are very lethal. Secondly, select material for the rings (i.e. surgical steel), determine Voltmax (in air or vacuum), and design a system to deliver the energy to a ring as the rear of a projectile passes through. If properly constructed, Voltmax=r1+r2 . . . rx or as a unit use ½ mv2. Outcome is very high muzzle exit velocity with extremely small recoil (?10?23 joules).
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Applicant: Quantum Information Specialists, Inc.
    Inventors: Leonard Pearlstein, James McNully, Gilbert F. Rau
  • Patent number: 5849816
    Abstract: A high performance absorbent particulate composition and a method of preparation in which a non-colloidal solid filler core is substantially encapsulated within a layer of hydrogel forming polymer is disclosed. Also disclosed are absorbent devices using the high performance absorbent particulate composition and methods of making these devices.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: December 15, 1998
    Assignee: Leonard Pearlstein
    Inventors: Stuart P. Suskind, Leonard Pearlstein
  • Patent number: 5709897
    Abstract: In a package for food products having a tendency to exude liquids, an absorbent pad underlying the food product in a tray is made up of an absorbent layer underneath a layer of polyethylene film having an array of elongated, thermoformed apertures. These apertures efficiently transport liquid into the absorbent layer and resist reverse flow when pressure is applied to the absorbent pad, thereby making it possible to utilize a paperboard tray. The absorbent layer and apertured polyethylene film can be laminated together with a paperboard base layer, and the laminate can then be die cut and folded to form a tray made up entirely of the laminate and having its bottom and side walls lined with the absorbent material and apertured film.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: January 20, 1998
    Inventor: Leonard Pearlstein
  • Patent number: 5549590
    Abstract: A high performance absorbent particulate composition and a method of preparation in which non-colloidal solid filler core is substantially encapsulated within a bounding layer of hydrogel forming polymer is disclosed. In preferred embodiments, the size of the solid filler core is about 10 to about 1500 microns contributing about 20% to about 90% by weight of the composition. The particles of the present invention provide rapid absorption of a large volume of aqueous fluids. A wide range of performance properties are achieved through selection of the filler core and the polymer.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: August 27, 1996
    Assignee: Leonard Pearlstein
    Inventors: Stuart Suskind, Leonard Pearlstein
  • Patent number: 5539019
    Abstract: A high performance absorbent particulate composition and a method of preparation in which non-colloidal solid filler core is substantially encapsulated within a bounding layer of hydrogel forming polymer is disclosed. In preferred embodiments, the size of the solid filler core is about 10 to about 1500 microns contributing about 20% to about 90% by weight of the composition. The particles of the present invention provide rapid absorption of a large volume of aqueous fluids. A wide range of performance properties are achieved through selection of the filler core and the polymer.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: July 23, 1996
    Assignee: Leonard Pearlstein
    Inventors: Stuart Suskind, Leonard Pearlstein
  • Patent number: 5409747
    Abstract: A biodegradable paperboard container having an inner moisture resistant barrier coating for storing moist towels and a method for producing the container and moist towels.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: April 25, 1995
    Assignee: Leonard Pearlstein
    Inventors: Leonard Pearlstein, Stuart P. Suskind
  • Patent number: 5286538
    Abstract: A biodegradable paperboard container having an inner moisture resistant barrier coating for storing moist towels.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: February 15, 1994
    Assignee: Leonard Pearlstein
    Inventors: Leonard Pearlstein, Stuart P. Suskind
  • Patent number: D342996
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: January 4, 1994
    Assignee: ICD Industries, Inc.
    Inventors: Leonard Pearlstein, Gerd Cremer
  • Patent number: D348514
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: July 5, 1994
    Assignee: ICD Industries, Inc.
    Inventors: Leonard Pearlstein, Gerd Cremer