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| (Source: UMC) |
United Microelectronics Corp. has assigned a portfolio of 44 U.S. semiconductor patents to Stellar Semiconductor Japan GK, marking the Japanese entity's first acquisition of U.S. patents from the Taiwanese foundry giant.
According to U.S. Patent and Trademark Office records, the transfer took place in June 2025 and centers on core device-level technologies. The portfolio spans CMOS and MOSFET structures and fabrication methods, extending to contact plugs, silicide and cap layers, and even memory devices.
In total, the portfolio comprises:
5 patents on MOSFET and transistor technology
4 patents covering gate, silicide and cap layer innovations
4 patents related to contact plug and interconnect structures
1 patent directed to SRAM memory
20+ patents broadly addressing semiconductor device design and manufacturing
Below is the full list of the 44 U.S. patents transferred from UMC to Stellar Semiconductor Japan GK.
Patent Application Invention title
7915127 12509623 MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE
8067806 12557535 GATE STRUCTURES OF CMOS DEVICE AND METHOD FOR MANUFACTURING THE SAME
8405143 13031910 SEMICONDUCTOR DEVICE
8975672 13292086 METAL OXIDE SEMICONDUCTOR TRANSISTOR AND MANUFACTURING METHOD THEREOF
8766319 13456238 SEMICONDUCTOR DEVICE WITH ULTRA THIN SILICIDE LAYER
9012975 13517759 FIELD EFFECT TRANSISTOR AND MANUFACTURING METHOD THEREOF
9054172 13705175 SEMICONDUCTOR STRUCTURE HAVING CONTACT PLUG AND METHOD OF MAKING THE SAME
9006804 13912173 SEMICONDUCTOR DEVICE AND FABRICATION METHOD THEREOF
9231071 14187701 SEMICONDUCTOR STRUCTURE AND MANUFACTURING METHOD OF THE SAME
8993390 14277812 METHOD FOR FABRICATING SEMICONDUCTOR DEVICE
9870994 14489461 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
9673100 14536696 SEMICONDUCTOR DEVICE HAVING CONTACT PLUG IN TWO DIELECTRIC LAYERS AND TWO ETCH STOP LAYERS
9219140 14592872 METAL OXIDE SEMICONDUCTOR TRANSISTOR AND MANUFACTURING METHOD THEREOF
9397214 14622943 SEMICONDUCTOR DEVICE
9871123 14636430 FIELD EFFECT TRANSISTOR AND MANUFACTURING METHOD THEREOF
9281199 14639134 METHOD FOR FABRICATING SEMICONDUCTOR DEVICE WITH PATERNED HARD MASK
9281367 14697615 SEMICONDUCTOR STRUCTURE HAVING CONTACT PLUG AND METHOD OF MAKING THE SAME
9589966 14724775 STATIC RANDOM ACCESS MEMORY
9455227 14935456 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
9875901 14941648 Manufacturing Method of Metal Oxide Semiconductor Transistor
9496396 14961902 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
10049929 15008453 METHOD OF MAKING SEMICONDUCTOR STRUCTURE HAVING CONTACT PLUG
9929234 15144842 SEMICONDUCTOR DEVICE HAVING A CAP LAYER WITH V-SHAPE
10332877 15242591 SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
9685337 15243986 METHOD FOR FABRICATING SEMICONDUCTOR DEVICE
10283413 15264590 SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
9847393 15286541 SEMICONDUCTOR DEVICE
9899267 15390527 SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
10121704 15861692 SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
10546922 15890320 METHOD FOR FABRICATING CAP LAYER ON AN EPITAXIAL LAYER
10504791 16143368 SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
10734496 16177368 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
10460997 16360019 MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE
10818660 16407188 SEMICONDUCTOR DEVICE
10522415 16562454 SEMICONDUCTOR DEVICE
10903143 16572627 SEMICONDUCTOR DEVICE
11322598 16907287 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
11552001 17121696 SEMICONDUCTOR DEVICE
11757016 17709385 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
12087666 18077168 SEMICONDUCTOR DEVICE
12237394 18226262 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
12125890 18226264 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
None 18888191 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
None 19021275 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
By PatenTrip
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