Patent · US Active

Optical brightening compositions

US8845861B2 · kind B2 · utility

2Cited by
12References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 12, 2009
Grant dateSep 30, 2014
Priority date—
Expiry dateAug 16, 2029

Classification

  • Technology area (CPC D)Textiles; Paper
  • CPC primaryD21H21/30
  • WIPO fieldTextile and paper machines
  • WIPO sectorMechanical engineering

Abstract

A sizing composition for paper, characterised in that the sizing composition comprises

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