The patent application was filed by Brunswick Corporation for a method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys. It was filed on Sep. 4, 2019 before being approved on Aug. 17, 2021.
Though patents are required for inventions and products, the granting of a patent is not a guarantee for success. Dennis Crouch, co-director of the Center for Intellectual Property & Entrepreneurship said roughly 50 percent of patents expire prematurely due to costs.
There were three patents granted for Mettawa inventors in the week ending Aug. 21.
Longest patent application period in Mettawa for week ending Aug. 21
| Applicant Name | Filing Date | Granted Date |
|---|---|---|
| Brunswick Corporation | 2019-09-04 | 2021-08-17 |
| Brunswick Corporation | 2019-11-06 | 2021-08-17 |
| Brunswick Corporation | 2020-05-29 | 2021-08-17 |
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