Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Norman W. Gavin — 41 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
North Haven, CT: #6 of 227 inventorsTop 3%
Connecticut: #676 of 34,797 inventorsTop 2%
Overall (All Time): #75,001 of 4,157,543Top 2%
41 Patents All Time
Norman W. Gavin has been granted 41 US patents while listed as an inventor at Unknown. The first was granted in 1988 and the most recent in June 2008. Norman W. Gavin ranks #75,001 of 4,157,543 US inventors in our database (top 1.8%). Patent records list Norman W. Gavin in North Haven, CT, US.

Patents per Year

Patents granted per year, 1988 to 2008Bar chart with a peak of 7 patents in 1997.peak 71988: 1 patents19881989: 3 patents1991: 2 patents19911992: 1 patents1994: 2 patents19941995: 1 patents1996: 1 patents19961997: 7 patents1998: 3 patents19981999: 4 patents2000: 1 patents20002002: 4 patents2003: 3 patents20032004: 4 patents2005: 1 patents20052006: 2 patents2008: 1 patents2008

Issued Patents All Time

Showing 1–25 of 41 patents

Patent #TitleCo-InventorsDate
7389891 Septic system tank 2008-06-24
7086652 Molded seal 2006-08-08
6986227 Stackable riser configuration 2006-01-17
6877281 Stackable riser configuration 2005-04-12
6817631 Septic system box pipe seal 2004-11-16
6789776 Cast-in anchor attachment apparatus 2004-09-14
6691975 Concrete tank seal cast 2004-02-17
6688072 Cover for riser section and method of using cover for anchoring riser section in concrete 2004-02-10
6666349 Septic system tank 2003-12-23
6655093 Riser section and cover therefor 2003-12-02
6609718 Seal for casting in a concrete wall of a fluid distribution system container 2003-08-26
6484451 Stackable riser resistant to soil movement 2002-11-26
6460860 Pipe seal for cast concrete 2002-10-08
6450505 Seal for casting in a concrete wall of a fluid distribution system container 2002-09-17
6385938 Space for concrete reinforcement rods 2002-05-14
6015488 Filter system for septic tank 2000-01-18
5927898 Method for installing a septic tank in soil 1999-07-27
5882014 Removable section pipe seal for septic systems 1999-03-16
5871640 Filter and housing 1999-02-16
D405166 Removable section pipe seal 1999-02-02
D402349 Septic system filter 1998-12-08
5772361 Extendable anchor base septic tank 1998-06-30
5711451 Concrete tank support system 1998-01-27
5680989 Adjustable weir for liquid distribution systems Richard F. Plachy 1997-10-28
5666768 Collapsible handle assembly for concrete covers 1997-09-16