Patents by Inventor Craig A. Lesser

Craig A. Lesser 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).

  • Tobacco smoke filter
    Publication number: 20050166933
    Abstract: A tobacco smoke filter comprising a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye. A method of making a first tobacco smoke filter segment, comprising the steps of providing one or more than one substance; producing a mixture of cellulose fiber, sodium sulfate, chlorine water and a substance; heating the mixture for a sufficient time at one or more than one temperature sufficient to covalently link the substance to the cellulose fiber; and forming the cellulose fiber with covalently bound substance into the first tobacco smoke filter segment. The substance can be a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye.
    Type: Application
    Filed: September 20, 2004
    Publication date: August 4, 2005
    Inventors: Craig Lesser, Reid Von Borstel
  • Tobacco smoke filter
    Patent number: 6792953
    Abstract: A tobacco smoke filter a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye. A method of making a first tobacco smoke filter segment, comprising the steps of, first, providing one or more than one substance; producing a mixture of cellulose fiber and the substance; heating the mixture for a sufficient time at one or more than one temperature sufficient to covalently link the substance to the cellulose fiber; and forming the cellulose fiber with covalently bound substance into the first tobacco smoke filter segment. The substance can be a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: September 21, 2004
    Assignee: Filligent Limited
    Inventors: Craig A. Lesser, Reid W. Von Borstel
  • Tobacco smoke filter
    Publication number: 20030183239
    Abstract: A tobacco smoke filter a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye. A method of making a first tobacco smoke filter segment, comprising the steps of, first, providing one or more than one substance; producing a mixture of cellulose fiber and the substance; heating the mixture for a sufficient time at one or more than one temperature sufficient to covalently link the substance to the cellulose fiber; and forming the cellulose fiber with covalently bound substance into the first tobacco smoke filter segment. The substance can be a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye.
    Type: Application
    Filed: March 10, 2003
    Publication date: October 2, 2003
    Inventors: Craig A. Lesser, Reid W. Von Borstel
  • Cigarette filter containing dry water and a porphyrin
    Patent number: 6530377
    Abstract: A tobacco smoke filter comprising a porous substrate comprising dry water and a porphyrin dispersed therein. The porous substrate can further comprise microcapsules. The microcapsules can comprise one or more substances selected from the group consisting of chlorophyllin, methylcellulose, sodium pyroglutamate and a vegetable oil. The porous substrate can further comprise sodium pyroglutamate.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: March 11, 2003
    Assignee: Filligent Limited
    Inventors: Craig Lesser, Reid W. Von Borstel
  • Cigarette filter containing dry water and microcapsules
    Patent number: 6164288
    Abstract: A tobacco smoke filter containing a porous substrate having dry water and microcapsules dispersed therein. The microcapsules contain at least one compound selected from the group consisting of chlorophyllin, methylcellulose, sodium pyroglutamate and a vegetable oil. The tobacco smoke filter can also contain one or more substances such as a porphyrin, and sodium pyroglutamate.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: December 26, 2000
    Assignee: Craig Lesser
    Inventors: Craig Lesser, Reid W. Von Borstel
  • Cigarette filter containing dry water and microcapsules
    Patent number: 5975086
    Abstract: A tobacco smoke filter consisting essentially of a porous substrate having dry water and microcapsules dispersed therein. The microcapsules comprise at least one substance selected from the group consisting of chlorophyllin, methylcellulose, sodium pyroglutamate and a vegetable oil.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: November 2, 1999
    Assignee: Craig Lesser
    Inventors: Craig Lesser, Reid W. Von Borstel
  • Cigarette filter containing a humectant
    Patent number: 5860428
    Abstract: A cigarette filter comprises a humectant, preferably sodium pyroglutamate, and optionally a surfactant. The humectant absorbs moisture from the tobacco smoke for wet-filtration of the tobacco smoke.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: January 19, 1999
    Assignee: Craig Lesser
    Inventors: Craig Lesser, Reid W Von Borstel
  • Cigarette filter containing microcapsules and sodium pyroglutamate
    Patent number: 5839447
    Abstract: A tobacco smoke filter with a porous substrate having a humectant, such as sodium pyroglutamate, dispersed therein to absorb moisture from the tobacco smoke thereby wet-filtering the tobacco smoke. Also, a tobacco smoke filter with a porous substrate having microcapsules dispersed therein. The microcapsules have a humectant such as sodium pyroglutamate. The microcapsules further preferably have one or more of methylcellulose, chlorophyllin and at least one vegetable oil.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: November 24, 1998
    Inventors: Craig Lesser, Reid W. Von Borstel
  • Tobacco smoke filter for removing toxic compounds
    Patent number: 5746231
    Abstract: A tobacco smoke filter comprising a porous substrate having a humectant, such as sodium pyroglutamate, dispersed therein to absorb moisture from the tobacco smoke thereby wet-filtering the tobacco smoke. The tobacco smoke filter can also comprise a porous substrate having microcapsules dispersed therein. The microcapsules can comprise a humectant such as sodium pyroglutamate. The microcapsules further preferably comprise one or more of methylcellulose, chlorophyllin and at least one vegetable oil. The tobacco smoke filter can also comprise a porous substrate having dry water and a porphyrin dispersed therein. The tobacco smoke filter can also comprise a porous substrate having a copper-containing porphyrin dispersed therein.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: May 5, 1998
    Assignee: Craig Lesser
    Inventors: Craig Lesser, Reid W. Von Borstel
  • Cigarette filter containing a humectant
    Patent number: 5501238
    Abstract: A cigarette filter has a humectant, preferably sodium pyroglutamate, and optionally a surfactant. The humectant absorbs moisture from the tobacco smoke for wet-filtration of the tobacco smoke.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: March 26, 1996
    Inventors: Reid W. Von Borstel, Craig Lesser