4d s ltd has a total of 16 patent applications. Its first patent ever was published in 2013. It filed its patents most often in United States, Taiwan and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets computer technology, semiconductors and electrical machinery and energy are INTEGRATED MEMORY TECH INC, JIANGSU ADVANCED MEMORY TECH CO LTD and FERROELECTRIC MEMORY GMBH.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 8 | |
#2 | Taiwan | 4 | |
#3 | WIPO (World Intellectual Property Organization) | 4 |
# | Industry | |
---|---|---|
#1 | Computer technology | |
#2 | Semiconductors | |
#3 | Electrical machinery and energy | |
#4 | Surface technology and coating |
# | Technology | |
---|---|---|
#1 | Semiconductor devices | |
#2 | Static stores | |
#3 | Electric discharge tubes | |
#4 | Coating metallic material |
# | Name | Total Patents |
---|---|---|
#1 | Desu Seshubabu | 14 |
#2 | Van Buskirk Michael | 7 |
#3 | Cleveland Lee | 2 |
#4 | Yang-Scharlotta Jean | 1 |
#5 | Nagashima Makoto | 1 |
#6 | Pfluger Kurt | 1 |
#7 | Tan Theng Kiat Peter | 1 |
#8 | Schuette Franz Michael | 1 |
Publication | Filing date | Title |
---|---|---|
US10381558B1 | Resistive memory device having a retention layer | |
US2019288197A1 | Resistive memory device having ohmic contacts | |
US10319907B1 | Resistive memory device having a template layer | |
US2019288196A1 | Resistive memory device having a conductive barrier layer | |
US2014269007A1 | Complementary metal oxide or metal nitride heterojunction memory devices with asymmetric hysteresis property | |
US2014376299A1 | Methods and circuits for bulk erase of resistive memory |