Patents by Inventor Phan van Pham

Phan van Pham 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).

  • Method for the determination of an acid or a base in a non-aqueous liquid
    Publication number: 20010046711
    Abstract: A chemical analysis method for the determination of a base (or an acid) in a nonaqueous liquid (such as a polyol) which method can be automated and placed on-line in a chemical production facility. The instant invention includes two steps. The first step is to mix an acid-base indicator (for example, bromocresol green) with the non-aqueous liquid to produce a colored reaction product between the base or acid and the acid-base indicator. The second step is to determine the intensity of the color of the colored product.
    Type: Application
    Filed: March 26, 2001
    Publication date: November 29, 2001
    Inventors: Phan van Pham, Sofia Galanis Hohnholt, Raymond Alfonsas Plepys, Purnendu K. Dasgupta