Patents by Inventor Charles E. Baldwin

Charles E. Baldwin 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: 7132662
    Abstract: A flexible scintillation-type level detector (10), in which the scintillator (18) is made from a flexible tube (12) substantially filled with a liquid scintillating material (16) to provide flexibility in at least two, and preferably three, dimensions. At least one end (32) is aligned for operable connection to a photodetector (14, 20). Outer surfaces of the flexible tube (12) may be covered with an inwardly-facing light reflective material (30) and/or light-excluding material or flexible armored casing(22). The scintillator (18) may include a variable-volume expansion chamber (110, 152, 176) to compensate for thermal expansion and contraction of the liquid scintillator material (16).
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 7, 2006
    Assignee: Ronan Engineering Company
    Inventors: Charles E. Baldwin, Craig Carls
  • Publication number: 20040251416
    Abstract: A flexible scintillation-type level detector (10), in which the scintillator (18) is made from a flexible tube (12) substantially filled with a liquid scintillating material (16) to provide flexibility in at least two, and preferably three, dimensions. At least one end (32) is aligned for operable connection to a photodetector (14, 20). Outer surfaces of the flexible tube (12) may be covered with an inwardly-facing light reflective material (30) and/or light-excluding material or flexible armored casing(22). The scintillator (18) may include a variable-volume expansion chamber (110, 152, 176) to compensate for thermal expansion and contraction of the liquid scintillator material (16).
    Type: Application
    Filed: March 26, 2004
    Publication date: December 16, 2004
    Inventors: Charles E. Baldwin, Craig Caris
  • Patent number: 6563120
    Abstract: Shown is a flexible scintillator, or scintillation-type level detector, in which the scintillator is made from a plurality of elongated, relatively thin layers of plastic scintillator material stacked in close proximity to one another in a slidable relationship to provide flexibility in at least two dimensions. The layers of at least one end are aligned for operable connection to a photodetector. Optionally, an anti-friction material, such as PTFE, may be placed between layers of the plastic scintillator material. Edge and outer face surfaces of the layers of the scintillator material may be covered with an inwardly facing light reflective material and/or light-excluding material.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: May 13, 2003
    Assignee: Ronan Engineering Co.
    Inventors: Charles E. Baldwin, Craig Caris
  • Patent number: 6204430
    Abstract: The current invention provides methods for stabilizing wastes, preparing construction materials and stabilizing soils using compositions including hexametaphosphate, with or without other additives. More particularly, one method of the invention discloses a process for treating a variety of materials including solid and liquid-containing wastes, including for example, common debris or hazardous, radioactive or toxic waste. This method involves combining a waste material with hexametaphosphate, and in some cases other additives. The resulting amended waste may also be compacted. Another method involves use of hexametaphosphate compositions to prepare construction materials. This method involves combining hexametaphosphate with a starting material such as soil, soil-containing compositions, mine tailings, mill tailings and combinations thereof. The resulting mixture is then compacted.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: March 20, 2001
    Assignee: Rocky Mountain Remediation Services LLC
    Inventors: Charles E. Baldwin, Alioune Sogue