Patent · US Expired

Filtration method

US3974072A · kind A · utility

8Cited by
12References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 25, 1974
Grant dateAug 10, 1976
Priority date—
Expiry dateFeb 25, 1994

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC12H1/00
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Microorganisms are removed from cutting-oil emulsions, and their growth is inhibited by passage through a filter comprising an inorganic fiber.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.