U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Sidestream smoke reducing cigarette paper with improved physicals and improved sidestream odor/aroma

Patent 5060674 Issued on October 29, 1991. Estimated Expiration Date: Icon_subject January 12, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2181614

3049449

3413978

3744496

Process for incorporating flavorant into cellulosic substrates and products produced thereby
Patent #: 4123592
Issued on: 10/31/1978
Inventor: Rainer ,   et al.

Smoking article
Patent #: 4129134
Issued on: 12/12/1978
Inventor: Hind ,   et al.

Process for incorporating flavorant into cellulosic substrates and products produced thereby
Patent #: 4184495
Issued on: 01/22/1980
Inventor: Rainer ,   et al.

High porosity carbon coated cigarette papers
Patent #: 4225636
Issued on: 09/30/1980
Inventor: Cline ,   et al.

Wrapper for smoking articles containing magnesium oxide
Patent #: 4231377
Issued on: 11/04/1980
Inventor: Cline ,   et al.

Smoking rod wrapper
Patent #: 4236532
Issued on: 12/02/1980
Inventor: Schweizer ,   et al.

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Inventors

Assignee

Application

No. 464462 filed on 01/12/1990

US Classes:

131/365Wrapper or binder

Examiners

Primary: Millin, V.

Attorney, Agent or Firm

Foreign Patent References

  • 117474 JP. 10/13/1977
  • 84-051256 JP. 01/13/1985

International Class

A24D 001/02

Abstract

Sheet material containing sodium carboxymethyl cellulose especially useful in forming wrappers for smokeable articles such as cigarettes that results in reduced sidestream smoke. The sheet is preferably formed by incorporating as a filler in a cellulosic web an amount of high superficial surface area filler in the range generally of from about 5 to 50 percent by weight in the finished sheet. The cellulosic material may be flax fiber or other natural cellulosic fibers conventionally used for such wrappers. Additional fillers may be used up to a total of about 50 percent, and, preferably, a burn modifier, carboxylic acid salt, preferably a nonhydroxy acid salt such as succinic acid salt is included in an amount of 4 to 15 percent by weight. The sheet can be formed by any conventional papermaking method. When such papers are used as cigarette wrappers, they effect a reduction of the total particulate matter in sidestream smoke of up to about 75 percent with improved taste and odor and without serious deterioration of other desirable properties. In addition, the sheet of the invention provides normal ash appearance in a smoking article.

Other References

  • The Pharmacopeia of the U.S.A., 17th Revision, 9/1/65, pp. 272-273
  • The Merck Index, 10th Edition, 1983, p. 64
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