Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Christopher A. Limcaco — 9 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Greenwood, IN: #89 of 649 inventorsTop 15%
Indiana: #4,123 of 33,936 inventorsTop 15%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Christopher A. Limcaco has been granted 9 US patents while listed as an inventor at Unknown. The first was granted in 1997 and the most recent in July 2023. Christopher A. Limcaco ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Christopher A. Limcaco in Greenwood, IN, US.

Patents per Year

Patents granted per year, 1997 to 2023Bar chart with a peak of 3 patents in 2010.peak 31997: 1 patents19971998: 1 patents19982000: 1 patents20002010: 3 patents20102011: 1 patents20112016: 1 patents20162023: 1 patents2023

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
11702353 Floating water treatment apparatus 2023-07-18
9380766 Aquaculture system 2016-07-05
7981292 System and method for biological wastewater treatment and for using the byproduct thereof 2011-07-19
7850848 Apparatus and process for biological wastewater treatment 2010-12-14
7776211 System and method for biological wastewater treatment and for using the byproduct thereof 2010-08-17
7736508 System and method for biological wastewater treatment and for using the byproduct thereof 2010-06-15
6158386 Fluid treatment systems 2000-12-12
5755961 Aquarium system 1998-05-26
5647983 Aquarium system 1997-07-15