IBM Technical Disclosure Bulletins
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IBM Technical Disclosure Bulletins (TDB) were defensive publications produced by IBM between 1958 and January 1998. The TDBs provided IBM employees with a way to "publish defensive disclosures of inventions that were not formally patented," and TDBs are referenced over 48,000 times in US patent documents.
The TDBs are available to search on IP.com, the search system Delphion, and they are kept on file at Patent & Trademark Offices and U.S. Government Depository Libraries. User can also access copies of TDBs published prior to February 1998 from Denver Public Library and New York Public Library (for a fee).
- ↑ "Non-patent Prior Art Collections." Delphion website, http://www.delphion.com/products/research/products-priorart. Accessed September 13, 2011.
- ↑ 2.0 2.1 "Technical disclosures for patents." IBM website, http://www.ibm.com/ibm/licensing/patents/disclosures.shtml. Accessed September 13, 2011.