Patent No. US3174485 (titled "Organoleptically Improved Tobacco Product") was filed by Brown & Williamson Tobacco on May 23, 1963. The application was issued on Mar 23, 1965.
'485 is related to the field of tobacco flavoring, specifically addressing the problem of inconsistent flavor and aroma in tobacco products due to variations in tobacco crops and processing. The background highlights the difficulty in maintaining a uniform taste and aroma across different batches of tobacco, a crucial aspect for brand consistency and consumer satisfaction. Traditional methods of blending and flavoring often fall short in compensating for these natural variations.
The underlying idea behind '485 is to enhance and standardize the natural tobacco flavor by introducing specific aroma and flavor additives. The core insight is that certain chemical compounds, when added in small quantities, can significantly improve the organoleptic qualities of tobacco, masking inconsistencies and providing a more controlled and desirable smoking experience. These additives are intended to supplement, not replace, the natural tobacco flavor.
The claims of '485 focus on a tobacco product incorporating between 0.001 and 1.0% by weight of one or more of the following active ingredients: 2-methyl-5-isopropyl-l,3-nonadiene-8-one, its precursor, 2,6-dimethyl-2,6-undecadiene-10-one (geranylacetone), 2-methyl-5-isopropylacetophenone or its isomers, p-methylacetophenone, 6-methyl-5-hepten-2-one (methylheptenone), and methyl-2-furoate. The claims cover the tobacco product itself, as well as the use of these compounds as additives to enhance flavor and aroma.
In practice, the invention involves extracting or synthesizing the specified chemical compounds and then incorporating them into the tobacco material. This can be achieved by dissolving the additives in a solvent like ethanol and spraying the solution onto the tobacco, applying it to the wrapper, or even adding it to the filter. The patent details methods for extracting these compounds from tobacco itself, using techniques like vacuum distillation and chromatography, as well as synthetic routes for producing them.
The differentiation from prior approaches lies in the specific selection and application of these particular chemical compounds. While previous methods might have used various flavorings to mask inconsistencies, '485 aims to enhance the inherent tobacco flavor profile in a controlled manner. The use of compounds like 2-methyl-5-isopropyl-l,3-nonadiene-8-one and its precursor, either alone or in combination, is presented as a novel approach to achieving a more consistent and desirable organoleptic experience in smoking tobacco products. The patent emphasizes that even small amounts of these additives can significantly improve the flavor and aroma.
In the early 1960s when '485 was filed, tobacco flavoring was typically achieved through careful selection and blending of tobacco leaves, supplemented by casing and flavoring materials. At a time when precise analytical techniques were less developed, maintaining consistent flavor profiles across different tobacco crops and blends presented a significant challenge. Variations in growing conditions and inherent differences in tobacco varieties made it non-trivial to achieve uniform organoleptic characteristics in the final product.
The disclosed invention addresses the problem of inconsistent tobacco flavor by introducing specific aroma and flavor additives. The solution involves incorporating compounds such as 2-methyl-5-isopropyl-1,3-nonadiene-8-one, geranylacetone, and related substances directly into the tobacco product. This integration of defined chemical components enables a more controlled and enhanced flavor profile, overcoming the limitations of relying solely on variable natural tobacco sources and masking agents. The technical effect is a more uniform and predictable organoleptic experience for the consumer.
This patent contains zero claims, therefore there are no independent or dependent claims to analyze. Consequently, there is no focus or role to describe.
Definitions of key terms used in the patent claims.

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