Patent · US Expired

Method for expanding tobacco

US6397851B1 · kind B1 · utility

3Cited by

4References

9Claims

0Family size

Assignee

BRITISH AMERICAN TOBACCO (GERMANY) GMBH · DE

Inventors

Frank Pluckhahn · Bayreuth, DE
Gerald Schmekel · Elmshorn, DE
Arno Weiss · Norderstedt, DE

Key dates

Filing date	Mar 2, 2000
Grant date	Jun 4, 2002
Priority date	—
Expiry date	Mar 2, 2020

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24B3/182
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A method and an apparatus for expanding foodstuffs and luxury foodstuffs/tobacco materials capable of being expanded, in particular moist tobacco materials, wherein said materials in a carrier flow comprising steam pass through an expansion zone, comprising a Laval nozzle, in which the speed of sound is attained in the narrowest cross section.

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