Patents by Inventor Charles C. Cohn

Charles C. Cohn 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: 4453553
    Abstract: One version of a fire resistant cigarette comprises a charge of tobacco in a low-porosity wrapper substantially free of burn accelerator. The sidestream smoke from this cigarette can be reduced by treating the wrapper with water or ethyl alcohol. Fire resistance is further improved by depositing a linear burn rate reducing substance on the paper from the group consisting of citric acid, magnesium citrate, magnesium acetate, tartaric acid, acetic acid, lactic acid, a sugar, non-fat milk and skim milk. Similar results are achieved with conventional medium to high porosity cigarette papers by treating them with a burn rate reducing substance from the same group. In the case of high porosity cigarette paper, if only a part of the surface area is treated, the porosity of the untreated areas controls tar, nicotine, and carbon monoxide delivery.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: June 12, 1984
    Inventor: Charles C. Cohn
  • Patent number: 4187862
    Abstract: Cigarette paper is treated by one or the other of two alternative processes. The first alternative process is characterized by the step of coating between 40 and 100% of the surface area of the paper with an aqueous alkali metal silicate solution, the SiO.sub.2 concentration of which ranges from between 12 and 16% for 40% coverage to between 7 and 15% for full coverage. The second alternative process is characterized by two sequential uniform coatings of an aqueous alkali metal silicate solution, the SiO.sub.2 concentrations in each solution ranging from 1.7% to 6%.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: February 12, 1980
    Inventor: Charles C. Cohn
  • Patent number: 4146040
    Abstract: A fire resistant cigarette has a wrapper having a coating applied as a dual treatment comprising the separate steps of coating the wrapper with a solution of an alkali metal silicate and coating the wrapper with a pH lowering material wherein the pH lowering material lowers the pH of the alkali silicate. The dual treatment of the cigarette is such that when the cigarette is smoked it produces a smoke which has a pleasing taste and the cigarette is fire resistant.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: March 27, 1979
    Inventor: Charles C. Cohn
  • Patent number: 4136770
    Abstract: A match which is difficult for young children to ignite utilizes a protective coating on the tip of a match head which prevents ignition of the sulfur and potassium chlorate-containing mixture when an attempt is made to strike the match in the usual manner with its stem substantially perpendicular to the friction surface of the matchbook. The protective coating requires a special manipulation of the match whereby its stem is disposed at an angle preferably less than about forty degrees with respect to the friction surface so that the unprotected side of the match head can rub against the friction and ignite the match.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: January 30, 1979
    Inventor: Charles C. Cohn
  • Patent number: 4053048
    Abstract: The striking surface of a matchbook is camouflaged, protected or concealed to reduce the probability of the successful striking of a match by young children.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: October 11, 1977
    Inventor: Charles C. Cohn
  • Patent number: 4044778
    Abstract: A self-extinguishing cigarette particularly when in contact with a flammable surface wherein the wrapper which encloses the body of tobacco is provided with a coating deposited from an aqueous solution of an alkali silicate. The silicate solution contains from about 17 to 27 percent by weight of SiO.sub.2. The coating area of the silicate solution on the wrapper is from about 40 to 84 percent of the entire outside wrapper area. The silicate solution may have added thereto various beneficial additives such as acids, carbohydrates, colloids, humectants, fire retardent compounds, alumina gel compounds, or compatible compounds of the aforesaid additives.
    Type: Grant
    Filed: September 10, 1973
    Date of Patent: August 30, 1977
    Inventor: Charles C. Cohn