Patents by Inventor Mack D. Bowen

Mack D. Bowen 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: 4465556
    Abstract: A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: August 14, 1984
    Assignee: American Carbons, Inc.
    Inventors: Mack D. Bowen, Kenneth R. Purdy
  • Patent number: 4419185
    Abstract: A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: December 6, 1983
    Assignee: American Carbons, Inc.
    Inventors: Mack D. Bowen, Kenneth R. Purdy
  • Patent number: 4373995
    Abstract: A pyrolysis process and system produces a solid residue and a clean, enriched fuel gas. In the process, the pyrolytic oil and filter cake are recycled in such a manner as to produce products of optimal value, and to minimize the need for servicing and downtime of the system. Recycling of water recovered in the process may also be employed to achieve enrichment of the gaseous product. The process may be carried ou in such a manner as to produce a non-polluting wastewater stream that can be discharged directly from the system.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: February 15, 1983
    Inventors: Mack D. Bowen, Kenneth R. Purdy
  • Patent number: 4317703
    Abstract: A pyrolysis process and system produces a solid residue and a clean, enriched fuel gas. In the process, the pyrolytic oil and filter cake are recycled in such a manner as to produce products of optimal value, and to minimize the need for servicing and downtime of the system. Recycling of water recovered in the process may also be employed to achieve enrichment of the gaseous product. The process may be carried out in such a manner as to produce a non-polluting wastewater stream that can be discharged directly from the system.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: March 2, 1982
    Assignee: American Can Company
    Inventors: Mack D. Bowen, Kenneth R. Purdy
  • Patent number: 4230602
    Abstract: A single-pass, continuous process converts organic feedstocks into activated carbonaceous products having high surface area values. The introduction of air and steam into the bed of material at selected locations, and at controlled rates, enables the economic, dependable and convenient production of such products, while maximizing the efficiency of energy utilization.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: October 28, 1980
    Assignee: American Can Company
    Inventors: Mack D. Bowen, Kenneth R. Purdy
  • Patent number: 4145256
    Abstract: A carbonaceous residue or char having novel properties is produced from particulate agricultural waste material, such as peanut shells, which upon heating exhibits an exothermic decomposition into an off gas component and a solid component in which the off gas component is more highly reactive to oxygen than is the solid component. By introducing air into the reaction zone whereat the decomposition is effected and controlling the amount of air so introduced such that not all of the off gas component may be oxidized, the preferential reaction of the air with the off gas component will protect the solid component from any significant oxidation while at the same time it will elevate the temperature in the reaction zone sufficiently to effect substantially complete decomposition of the material so that the recovered product is of very high carbon content. At the same time, a temperature gradient is established in the reaction zone which will allow some of the vapor component of the decomposition (i.e.
    Type: Grant
    Filed: December 2, 1976
    Date of Patent: March 20, 1979
    Assignee: Georgia Tech Research Institute
    Inventor: Mack D. Bowen