CW

Charles R. Wiedrich

PI Ppg Industries: 12 patents #70 of 1,216Top 6%
PO Ppg Industries Ohio: 5 patents #264 of 1,316Top 25%
📍 Barberton, OH: #6 of 118 inventorsTop 6%
🗺 Ohio: #4,140 of 73,341 inventorsTop 6%
Overall (All Time): #280,100 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
6423803 Polymerizable polyol (allyl carbonate) compositions Vidhu Nagpal 2002-07-23
6077921 Polymerizable polyol (allyl carbonate) compositions Vidhu Nagpal 2000-06-20
5973093 Polymerizable polyol (allyl carbonate) composition Randy E. Daughenbaugh, Robert D. Herold, John C. Crano 1999-10-26
5965680 Optical resin composition from polyol((meth)acryloyl carbonate) monomer Robert D. Herold, Ajay Parkhe, Christopher D. Selvig, Robert A. Smith 1999-10-12
5952441 Partially polymerized mixture of diethylene glycol (allyl carbonate) compounds Robert D. Herold, Bo-Wei Wu, Michael O. Okoroafor 1999-09-14
5811503 Polymerizable composition Robert D. Herold, Randy E. Daughenbaugh 1998-09-22
5739243 Polymerizable composition Robert D. Herold 1998-04-14
5427748 Chemical feeder Gerard F. Dooley, Jr. 1995-06-27
5384102 Chemical feeder Richard H. Ferguson 1995-01-24
5106559 Solid halogen-containing composition and method for producing same Robert B. Simmons, Jonathan G. Lasch 1992-04-21
5089127 Chemical feed apparatus David M. Junker, Robert B. Simmons 1992-02-18
5049385 Solid halogen-containing composition and method for producing same Robert B. Simmons, Jonathan G. Lasch 1991-09-17
5009806 Calcium hypochlorite article Harlan B. Johnson, Ernie Allen, Peter P. Howell 1991-04-23
4970020 Calcium hypochlorite composition Harlan B. Johnson, Ernie Allen, Peter P. Howell 1990-11-13
4927546 Method for inhibiting growth of algae in recreational water Edward J. Sare 1990-05-22
4865760 Calcium hypochlorite composition Harlan B. Johnson, Ernie I. Allen, Peter P. Howell 1989-09-12
4584420 Method for producing vinyl chloride John C. Crano 1986-04-22