The study draws on findings from internal tobacco industry documents, U.S. patent awarded and pending applications, and a physical examination of Camel Exotic Blend cigarettes. Internal document research was conducted through a Web-based search of tobacco industry document collections made publicly available through the 1998 Master Settlement Agreement (MSA) between the state attorneys general and major U.S. tobacco manufacturers. The collections are updated on an ongoing basis and as of December 2004 housed more than seven million documents.3 We used the U.S. Patent and Trademark Office Web site to obtain issued patent awards and published patent applications.
Documents were identified through word searches (such as flavor, young, youth, candy, sweet, taste, pellet, preference) on both an index and the full text of the documents. A document was considered relevant if it described the use of flavors and flavor technology in the development of products targeting new and younger smokers. Identified documents were surveyed for recurring authors, named persons, keywords, and project names and codes that might reveal further avenues for retrieval. These searches resulted in a final set of approximately 120 relevant documents, ranging in date between 1969 and 2001.
Patents were identified using keyword searches (such as flavor delivery, filter) and were considered relevant if they described flavor delivery systems used to mask the taste or odor of tobacco smoke. A physical examination of the filters of various Camel Exotic Blend cigarettes was performed to identify the presence of a unique flavor-delivery pellet as described in U.S. patents and within the internal documents.