JH

John A. Helmsderfer

UN Unknown: 9 patents #1,046 of 83,584Top 2%
PL Partners In Innovation Limited: 7 patents #1 of 10Top 10%
MC Mcguire Manufacturing Co.: 3 patents #1 of 4Top 25%
TR Truebro: 2 patents #3 of 4Top 75%
📍 East Liverpool, OH: #1 of 49 inventorsTop 3%
🗺 Ohio: #644 of 73,341 inventorsTop 1%
Overall (All Time): #47,606 of 4,157,543Top 2%
54
Patents All Time

Issued Patents All Time

Showing 26–50 of 54 patents

Patent #TitleCo-InventorsDate
6010184 Child support device with removable seat element Greg Lee 2000-01-04
D416155 Portion of a base for a baby diaper changing station David Memke 1999-11-09
5960820 Cover assembly having rapid installation features for covering undersink piping 1999-10-05
D412634 Baby diaper changing station David Memke 1999-08-10
5934316 Cover assembly and method for covering undersink piping 1999-08-10
D412258 Baby diaper changing station David Memke 1999-07-27
5915412 Cover assembly for covering undersink piping 1999-06-29
5915413 Cover assembly with integral measurement indicia for covering undersink piping 1999-06-29
5913325 Cover assembly for covering undersink piping utilizing wrappable collars 1999-06-22
5911237 Cover assembly and method for covering undersink piping 1999-06-15
5904175 Cover assembly and method for covering undersink piping 1999-05-18
D409728 Insulative cover for undersink piping 1999-05-11
5901739 Cover assembly with integral securing apparatus for covering undersink piping 1999-05-11
D408190 Platform for a baby diaper changing station David Memke 1999-04-20
5864905 Baby diaper changing station 1999-02-02
D397893 Baby diaper changing station 1998-09-08
5802647 Baby diaper changing station 1998-09-08
5795623 Cover assembly and method for covering undersink piping 1998-08-18
5754999 Baby diaper changing station 1998-05-26
D391794 Baby diaper changing station 1998-03-10
5701929 Cover assembly having rapid installation features for covering undersink piping 1997-12-30
5699828 Cover assembly with integral measurement indicia for covering undersink piping 1997-12-23
5685328 Cover assembly and method for covering undersink piping 1997-11-11
5678598 Cover assembly and method for covering undersink piping 1997-10-21
5649566 Cover assembly and method for covering undersink piping 1997-07-22