You can begin your patent search using Google Patent Search

If this doesn't produce the results you need, the engineering librarian has put together a resource guide on how to conduct a thorough patent search, Patent and Trademark Searching

American Fact Finder

The U.S. Census Bureau is the primary resource for U.S. demographic data (United States, Puerto Rico and the Island Areas), and the primary tool for accessing it is American FactFinder. It is fairly easy to use, and convenient since it includes data from several censuses and surveys including:

• The American Community Survey
• The American Housing Survey
• three Annual Economic Surveys
  • Annual Survey of Manufactures  
  • Business Patterns  
  • Nonemployer Statistics  
• The Decennial Census (every 10 years) (age, sex, race, housing units and more)
• The Economic Census (every 5 years)
• The Population Estimates Program

Other data and resources

• Oregon Rural Explorer   Information about towns in Oregon (including Portland)
• Current Population Survey  Income data
• Consumer Expenditures Surveys  Consumer Spending data
• StateMaster compares statistics between different states in the US -- for example you can compare the percentage of toothless Americans over 65 years of age in every state.
• SimplyMap  An online mapping database that enables users to develop interactive thematic maps and reports using thousands of demographic, business, and marketing data variables. Recently added Health questions. (cancelled after June 2020)

NAICS Lookup from the U.S. Census Bureau

What is NAICS? The North American Industry Classification System or NAICS is a federal classification system used by Canada, Mexico, and the United States to classify business establishments for the purpose of collecting, analyzing, and publishing statistical data relating to the business economy. Such industry classification systems are useful for comparing data.