Patent für Windenergiespeicher
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What are some patents based on wind energy technology?
They include General Electric patents for turbine control and rings/shrouds, Clipper and MRIGlobal (NREL) patents for variable speed turbines, Northern Power patents for direct drive turbines, and an early DOE patent describing wind-powered cooling towers. This report focuses on wind energy technology.
Who has the largest wind energy patent portfolio?
Figure 6 is dominated by three companies with the largest wind energy patent portfolios – General Electric (2,157 patent families), Vestas (1,699 families) and Siemens (1,680 families). They are followed by Mitsubishi Heavy Industries (744 wind energy patent families), with none of the other companies having more than 400 families.
How many offshore wind energy patents are there?
The new report, which summarises the results of patent analyses in this field, found that about 17 000 offshore wind energy patent families were published between 2002 and 2022, at an average annual increase of 18%. While growth stagnated between 2014 and 2017, recent years have seen a sharp increase in filings.
What is a patent for a wind turbine?
The patent at the head of Table 9 (US #7,004,724) is assigned to General Electric and describes a method for avoiding asynchronous loads in wind turbines. Since being issued in 2006, this patent has been cited as prior art by 86 subsequent patents, almost seven times as many citations as expected given its age and technology.
Which patent family is based on wind speed measurement?
Table 8 is headed by a 1985 patent family (representative patent US #4,651,017) assigned to DOE, which describes wind speed measurement for controlling wind turbines. This patent family is linked via citations to 232 subsequent families assigned to the leading companies, including families from nine out of these ten companies (i.e. all except SKF).
When did wind energy technology become a patented technology?
Following an initial phase marked by limited patent filings, the patenting activity in ofshore wind energy technologies experienced a notable surge starting in 2006. Subsequently, a period of consistent annual expansion persisted until 2012.