Question from Emily W.:
I know potato chips were invented by mistake – or I guess you could say prank – by a chef fed up with a guest complaining about his fries not being crispy enough.
But is it really true that the cook who invented them wasn’t allowed to get a patent because he was part African-American? How long ago was it, really?

The story goes that George Crum invented the potato chip at a resort in Saratoga Springs, New York during the summer of 1853. A guest in the restaurant where Crum was a chef sent back his order of French Fries complaining they were too thick and mushy. Crum decided to play a joke on the patron. He cut a batch of potatoes as thin as possible and then fried them until they were hard and crunchy. Instead of being angry about this new dish, the guest loved the potato chips. Soon others were coming to the restaurant asking for the thinly cut, deep fried potatoes. Crum opened his own restaurant in 1860. The main attraction of this restaurant was the basket of potato chips placed on the tables.

It is true that Crum did not receive for a patent for his potato invention. It is also true that Crum was Native American and African American. But it is not true that his lack of patent is because as an African American he was not allowed to receive one. Other African Americans held patents at the time. Thomas Jennings was the first African American to receive a patent. He received U.S. Patent 3306x on March 3, 1821 for a dry-cleaning process.

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Question from Sydney Q.:
Is there a patent for WD-40?

WD-40 was created in 1953 by Norm Larsen while working for the Rocket Chemical Company. The product was developed as a corrosion protector for missile covers. WD stands for water displacement and the inclusion of the number 40 is because it was Larsen’s 40th attempt that was successful.

WD-40 is now a household name and can be found in about 80% of American households. Still the company chose never to patent the product. The formula, like that for Coca Cola, is a trade secret. Applying for a patent would have required complete disclosure of the chemical formula and the manufacturing process. Also a patent issued in 1953 would have expired in 1980 and WD-40 would no longer have protection from duplication. Instead, by keeping the product’s ingredients a secret and heavily advertising it as such, WD-40 has faced little competition from similar products over the years. Continue reading “Ask the Invention Geek – WD-40 Patent?”

Question from Shelly M.:
I was out to dinner this weekend and my friend had a Sam Adam’s Oktoberfest with her dinner. I noticed it came in a pretty neat glass, and on the back was stamped a patent number. It was “D” and then some numbers. Did Sam Adams really patent a beer glass? And why does it have a ‘D’ at the front?

Yes, the Boston Beer Co the maker of Sam Adams did extensive research to design the perfect beer glass. They have received design patent D569489 for this glass. The D in front of the patent number signifies that the patent is not a utility patent as most patents are but a design patent. A design patent is a patent granted on the ornamental design of a functional item. A design patent does not apply to the workings of a product but only to its look and exterior. The term of the design patent is presently 14 years and they have no maintenance fees.

View the Beer Glass patent at the USPTO.

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Question from Jim S.:
My 5 year old daughter is always coming up with fabulous ideas for inventions. How old was the youngest person to receive a patent?

The youngest person to be granted a patent is Sydney Dittman, a four-year-old girl from Houston, Texas, for an aid for grasping round knobs. She was granted Patent 5,231,733 on August 3, 1993.

View the patent at the USPTO.

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Question from Dave L.:
What was the involvement of Matti Makkonen in the invention of text messaging? Is text messaging patented?

As a system designer for the telecom and post authority in Finland, Matti Makkonen was involved in developing mobile communications systems. The idea for text messaging began with Makkonen and two other Finish engineers in a pizzeria in Copenhagen in the summer of 1982. Patenting the idea never occurred to Makkonen and ultimately he was not paid a cent for his work.

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Question from Bob S.:
What patent has the longest title? Shortest title?

Patent #6,186,793 has the longest title with 42 words and 250 characters. The title is: Process to convert cost and location of a number of actual contingent events within a region into a three dimensional surface over a map that provides for every location within the region its own estimate of expected cost for future contingent events.
The shortest title belongs to Patent #2,053,882 with 1 word and 2 characters: Ax.

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Question from John L.:
I know you talked about the longest patent application ever filed. What about the shortest?

With about 480,000 applications filed each year with the USPTO, it is difficult to nail down what is the shortest application. The shortest application I have ever seen is also one of the most interesting. Application 20040005535 filed on January 8, 2004 for a Process of reincarnation has only 13 words in its abstract, one claim and no drawing. You can view this application in the USPTO database.

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Question from James M.:
How many patent applications are filed with United States Patent and Trademark Office each year? Of these applications, how many patents are granted?

In 2009, 482,871 patent applications were filed with United States Patent and Trademark Office. A total of 485,312 patent applications were filed with the USPTO in the year 2008.

In 2009, 191,927 patents were granted. 185,224 patents were granted in 2008.
To see a complete history of patents granted since 1963, visit the United States Patent and Trademark Office.

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Question from Sarah J.:
Have any US Presidents been granted patents?

Abraham Lincoln is the only US President to ever receive a patent. Lincoln received patent #6469 on May 22, 1849 for a device to lift boats over shoals.

Read more about Abraham Lincoln’s patent here.

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Question from Allan B.:
I was doing a research project and I’m wondering where is a good place to research actual patents for medical inventions?
Is that information free or do you have to pay for a service to see the documents? Also, do you know how far back they keep the patents for viewing?

Information about patents is available for free from the US Patent and Trademark Office – http://patft.uspto.gov/ or you can search for patent information at google patents – http://www.google.com/patents

The Patent and Trademark Office Database has the full text of patents which have been issued since 1976. The database includes the number, issue date and US classification for patents granted between 1790 and 1975. A file of the actual printed patent is also available for most patents granted after 1790.

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