Diamet has a total of 790 patents globally, out of which 446 have been granted. Of these 790 patents, more than 32% patents are active. The Japan is where Diamet has filed the maximum number of patents, followed by United States of America and China. Parallelly, The Japan seems to be the main focused R&D center and also USA is the origin country of Diamet.
Diamet was founded in 2005. The Company manufactures motor vehicle parts and accessories. The Company produces, researches, develops and sells automotive fuel consumption including sintered mechanical parts, oilless bearings and other power metallurgy parts. Company also develops mechanical parts used on system of generating natural electricity.
Do read about some of the most popular patents of Diamet which have been covered by us in this article and also you can find Diamet patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Diamet patent portfolio.
How many patents does Diamet have?
Diamet has a total of 790 patents globally. These patents belong to 369 unique patent families. Out of 790 patents, 257 patents are active.
How Many Patents did Diamet File Every Year?
Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.
| Year of Patents Filing or Grant | Diamet Applications Filed | Diamet Patents Granted |
| 2023 | – | 10 |
| 2022 | 2 | 17 |
| 2021 | 11 | 34 |
| 2020 | 19 | 36 |
| 2019 | 16 | 25 |
| 2018 | 33 | 21 |
| 2017 | 63 | 29 |
| 2016 | 32 | 19 |
| 2015 | 25 | 23 |
| 2014 | 11 | 20 |
| 2013 | 35 | 21 |
| 2012 | 26 | 32 |
How many Diamet patents are Alive/Dead?
Worldwide Patents 
How Many Patents did Diamet File in Different Countries?
Countries in which Diamet Filed Patents
| Country | Patents |
| Japan | 323 |
| United States Of America | 84 |
| China | 69 |
| Europe | 64 |
| Germany | 53 |
| Korea (South) | 37 |
| India | 32 |
| Austria | 28 |
| Indonesia | 13 |
| Spain | 10 |
| Brazil | 9 |
| Malaysia | 8 |
| Canada | 7 |
| Russia | 4 |
| Mexico | 2 |
| Hungary | 1 |
| Taiwan | 1 |
Where are Research Centers of Diamet Patents Located?
10 Best Diamet Patents
JP2004297036A is the most popular patent in the Diamet portfolio. It has received 66 citations so far from companies like Mitsubishi Materials Pmg Corporation, Fuji Electric Holdings and Kyocera Corp.
Below is the list of 10 most cited patents of Diamet:
| Publication Number | Citation Count |
| JP2004297036A | 66 |
| JP2007123703A | 63 |
| JP2004253787A | 62 |
| JP2011094167A | 42 |
| JP2005095979A | 39 |
| JP2005133168A | 38 |
| US20080003126A1 | 33 |
| JP2007013069A | 26 |
| JP2010153638A | 25 |
| JP2004308682A | 25 |
How many inventions of other companies were rejected due to Diamet patents?
The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Diamet invention. They couldn’t because Diamet had protected those before them. Examiners at the USPTO referred 24 Diamet patents in 75 rejections (35 USC § 102 or 35 USC § 103 types). The top citing companies in the Diamet patent portfolio are Ntn Corporation, Taiyo Yuden and Tdk. List of the Companies whose Patents were rejected citing Diamet –
| Company | Number of Patent Applications that faced Rejection Citing Diamet Patents | Number of Rejections (102 & 103) |
| Ntn Corporation | 6 | 11 |
| Taiyo Yuden | 5 | 5 |
| Tdk | 3 | 4 |
| Samsung Electro-Mechanics | 2 | 5 |
| Sumitomo Electric Industries | 2 | 2 |
| Hella Gmbh & Co | 1 | 2 |
| Epson | 1 | 1 |
| Hitachi Automotive Systems | 1 | 1 |
| Porite Corporation | 1 | 1 |
| Hitachi Construction Machinery | 1 | 1 |
Count of 102 and 103 Type Rejections based on Diamet Patents
Top Diamet Patents used in Rejecting Most Patent Applications
| Patent Number | Count of Rejected Applications |
| US8409371B2 | 4 |
| US9269481B2 | 4 |
| US7371271B2 | 4 |
| US9773597B2 | 3 |
| US8057101B2 | 2 |
| US7361203B2 | 2 |
| US20080003126A1 | 2 |
| US7632083B2 | 2 |
| US6663344B2 | 2 |
| US6793876B2 | 2 |
| US7572117B2 | 2 |
| US8092091B2 | 1 |
| US9476453B2 | 1 |
| US11183321B2 | 1 |
| US20090311129A1 | 1 |
What Percentage of Diamet US Patent Applications were Granted?
Diamet (Excluding its subsidiaries) has filed 81 patent applications at USPTO so far (Excluding Design and PCT applications). Out of these 64 have been granted leading to a grant rate of 86.49%. Below are the key stats of Diamet patent prosecution at the USPTO. 
Which Law Firms Filed Most US Patents for Diamet?
| Law Firm | Total Applications | Success Rate |
| Leason Ellis | 67 | 85.25% |
| Oblon Mcclelland Maier & Neustadt | 8 | 100.00% |
| Fishman Stewart | 2 | 100.00% |
| Armstrong Westerman Hattori Mcleland | 1 | 100.00% |
| Holtz Holtz & Volek | 1 | 100.00% |
| Kratz Quintos & Hanson | 1 | 0.00% |
| Locke Lord | 1 | 0% |
What are Diamet key innovation segments?
What Technologies are Covered by Diamet?
The chart below distributes patents filed by Diamet in different countries on the basis of the technology protected in patents. It also represents the markets where Diamet thinks it’s important to protect particular technology inventions.
R&D Focus: How has Diamet search focus changed over the years?
EXCLUSIVE INSIGHTS COMING SOON!