Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Eui-Sin Lee — 5 Patents

DCDaewoo Engineering & Construction Co.: 2 patents #15 of 82Top 20%
KTKorea Institute Of Construction Technology: 2 patents #10 of 125Top 8%
Seojong-myeon, KR: #2,364 of 10,205 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Eui-Sin Lee has been granted 5 US patents while listed as an inventor at Daewoo Engineering & Construction Co.. The first was granted in 1999 and the most recent in October 2013. Eui-Sin Lee ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Eui-Sin Lee in Seojong-myeon, KR.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8557114 Water purification apparatus and method for using pressure filter and pore control fiber filter Bum-Goo Lee, Hee-Kyong Oh, Jung-Yeol Eom 2013-10-15
8518261 Water purification apparatus and method for using pressure filter and pore control fiber filter Bum-Goo Lee, Hee-Kyong Oh, Jung-Yeol Eom 2013-08-27
7604733 Apparatus for biological removal of phosphorus and nitrogen using granulated methane-oxidizing bacteria Kwang Soo Kim, Hee Ja Lee, I-Tae Kim, Kwang Ho Ahn, Chai-Sung Gee +5 more 2009-10-20
7520991 Biological method for removing phosphorus and nitrogen from water using granulated methane-oxidizing bacteria Kwang Soo Kim, Hee Ja Lee, I-Tae Kim, Kwang Ho Ahn, Chai-Sung Gee +5 more 2009-04-21
5935299 Apparatus and method of spray dryer/bag filter using circulating shield air Chil Lim Park, Byung Hwan Kim, Gi Ho Park, Hee Jin In 1999-08-10