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Appendix Page 2 



* R.J. Reynolds Tobacco Co. Pats. 4,830,028 & 4,836,224, 1989. 



These two patents describe the addition of the levulinic 

 acid salt of nicotine to tobacco mixtures. The goal is the 

 achievement of enhanced tobacco taste and satisfaction 

 without the smoke being perceived as harsh or irritating. 

 This is accomplished by the addition of a salt of nicotine 

 which boosts the nicotine delivery of the smoke while 

 keeping the pH low (acidity high) . The practical result is 

 the maintenance of a low pH and the production of a 

 cigarette that delivers the desired dose of nicotine in a 

 form that is not harsh, that is, that can be easily inhaled. 



Adding nicotine to cigarette paper 



Imperial Tobacco Company (of Great Britain and Ireland) , Limited. 

 Pat. 3,422,819, 1969. 



The patent describes the impregnation of a nicotine salt 

 into cigarette paper. Nicotine alone does not work well 

 because of losses during storage. This problem is overcome 

 by using a salt of nicotine, preferably a citric acid salt. 



The patent also describes various ways to keep the consumer 

 from taking the treated paper directly into the mouth using 

 either an overwrap or a tipping paper. 



* Gallaher Limited. Pat. 4,236,532, 1980. 



The patent describes the printing of a series of dots on the 

 inside surface of cigarette paper using a screen printing 

 process. There may be more than one additive in the inks 

 used in the process, and it is clear that the process is 

 designed to boost the delivery of nicotine in mainstream 

 smoke. The pigment of an ordinary ink is replaced in this 

 invention by the additive (s). 



The first two claims read as follows: 



We claim: 



1. A method of producing a wrapper for a smoking rod, 

 the method comprising screen printing onto the surface 

 of the wrapper, a series of discrete dots of an ink 

 containing an additive which will in use, upon approach 

 of the hot burning tip of the smoking rod, be 

 transferred and contribute to the main stream smoke 

 drawn through the rod to enhance the satisfaction to 

 the smoker, wherein the additive is one or more of a 



