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USPTO Patent Rankings Data through Dec 31, 2025
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John E. Sheaffer — 28 Patents

LPLab Products: 27 patents #1 of 48Top 3%
Havre de Grace, MD: #3 of 118 inventorsTop 3%
Maryland: #678 of 35,612 inventorsTop 2%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
John E. Sheaffer has been granted 28 US patents while listed as an inventor at Lab Products. The first was granted in 1991 and the most recent in November 2008. John E. Sheaffer ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list John E. Sheaffer in Havre de Grace, MD, US.

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
7451723 Multipurpose rat cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Dale Murray, Eric A. Deitrich +3 more 2008-11-18
D476452 Animal cage water bottle Eric Dietrich 2003-06-24
6526915 Feeder assembly for use in a cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Albert P. Ruggieri, Dale Murray +3 more 2003-03-04
6341581 Multispecies rodent cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Albert P. Ruggieri, Dale Murray +3 more 2002-01-29
6336425 Multispecies rodent cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Albert P. Ruggieri, Dale Murray +3 more 2002-01-08
6336427 Feeder assembly for use in a cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Albert P. Ruggieri, Dale Murray +3 more 2002-01-08
6295950 Filter cap for an animal cage Eric A. Deitrich 2001-10-02
6227146 Filter top for rodent cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Dale Murray, Lynn Irwin 2001-05-08
6158387 Ventilated cage and rack system George S. Gabriel, Chin Soo Park 2000-12-12
6041741 Multispecies rodent cage George S. Gabriel, Neil E. Campbell, Chin Soo Park, Albert P. Ruggieri, Dale Murray +3 more 2000-03-28
6029698 Air regulator valve for ventilated cage and rack system Dale Murray, Ronald W. Hardesty 2000-02-29
D420772 Water bottle George S. Gabriel, Rodney Gerringer 2000-02-15
5975024 Cage for receiving a feeder 1999-11-02
5954013 Ventilated cage and rack system George S. Gabriel, Chin Soo Park 1999-09-21
5950567 Multiple dosage feeder for animal cage Theodore William Frentzel, Jr., Arvind Krishna Bhide, Charles Elwood Cover 1999-09-14
5924384 Animal cage assembly and combination water bottle holder and feeder Eric A. Deitrich 1999-07-20
D403130 Bottle Gary B. Bunney, Dale Murray 1998-12-22
D397526 Feeder for an animal cage 1998-08-25
5735233 Animal cage rack locking mechanism Eric A. Deitrich, Neil E. Campbell, James Best, William Marston, Ronald W. Hardesty 1998-04-07
5694885 Animal feeder with perch assembly Eric A. Deitrich 1997-12-09
D379683 Wire bar lid for an animal cage Eric A. Deitrich 1997-06-03
5349923 Ventilated cage and open rack system Eric A. Deitrich 1994-09-27
5311836 Ventilated cage and open rack system Eric A. Deitrich 1994-05-17
5165362 Ventilated cage and open rack system Eric A. Deitrich, Neil E. Campbell, Albert P. Ruggieri, Robert Sedlachek 1992-11-24
5097750 Waste management disposal system John V. Oldham, deceased, Chinsoo Park, William Marston, Eric A. Deitrich, Neil E. Campbell +1 more 1992-03-24