Patent · US Expired

Cigarette filter containing a humectant

US5860428A · kind A · utility

18Cited by
39References
81Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 13, 1995
Grant dateJan 19, 1999
Priority date—
Expiry dateOct 13, 2015

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA24D3/14
  • WIPO fieldOther consumer goods
  • WIPO sectorOther fields

Abstract

A cigarette filter comprises a humectant, preferably sodium pyroglutamate, and optionally a surfactant. The humectant absorbs moisture from the tobacco smoke for wet-filtration of the tobacco smoke.

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