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31.10.2018 | Original | Ausgabe 1/2019 Open Access

European Journal of Wood and Wood Products 1/2019

Geometry of wood screws: a patent review

European Journal of Wood and Wood Products > Ausgabe 1/2019
Maciej Sydor
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The article describes the results of the review and analyses of the patent literature relating to screws for wood materials used in the furniture manufacturing and in building construction. Based on the queries performed in several databases, 611 patent families containing 1031 unique patent documents from 1902 to 2017 have been identified. These documents were analyzed, and as a result, an overview was obtained containing screw inventions that are the most influential for the present state of the art of joinery. The number of forward citations and sizes of patent families were considered in the identification of the inventions recognized as the most influential. Additionally, the oldest often-cited screw patents were also quoted. As a result, eight very significant screw inventions were identified and the types of technical issues that these inventions solve were indicated. Additionally, these results were confronted with topics taken in scientific literature. This confrontation points to the weak link between scientific literature and patent literature in the field of threaded fastener for wood materials.

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