RJ

Ronald Richard Duff, JR.

TC The Gillette Company: 9 patents #173 of 1,479Top 15%
GC Gillett Canada: 4 patents #28 of 127Top 25%
📍 Shrewsbury, MA: #118 of 938 inventorsTop 15%
🗺 Massachusetts: #9,595 of 88,656 inventorsTop 15%
Overall (All Time): #366,853 of 4,157,543Top 9%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
11872713 Razors and razor cartridges with colored blades Laura Ming Xu, Kenneth James Skrobis, Neville Sonnenberg, Joseph Allan DePuydt 2024-01-16
11794366 Coatings for a razor blade Kenneth James Skrobis, William Owen Jolley, John Lawrence Maziarz, Bin Shen, Joe David Lussier +4 more 2023-10-24
11759965 Multi-layer coatings for a razor blade Kenneth James Skrobis, William Owen Jolley, John Lawrence Maziarz, Bin Shen, Joe David Lussier +4 more 2023-09-19
11691308 Razor blades with aluminum magnesium boride (AlMgB14)-based coatings Jeffrey Stuart Parker, Yongqing Ju, Xiandong Wang 2023-07-04
11654588 Razor blades John Joseph Nisby, Matthew Robert Stone, Yongqing Ju 2023-05-23
10118304 Method of treating razor blade cutting edges John Joseph Nisby, Kenneth James Skrobis, Joseph Allan DePuydt 2018-11-06
9220335 Toothbrush head Phillip M. Braun, William Brown, Thomas A. Christman, Thomas Craig Masterman, Karen Lynn Claire-Zimmet 2015-12-29
8528148 Toothbrush head William Brown, Phillip M. Braun, Thomas A. Christman, Thomas Craig Masterman, Karen Lynn Claire-Zimmet 2013-09-10
8332982 Vibrating toothbrush Phillip M. Braun, Joseph Syndosis, Richard Cohen, Thomas Craig Masterman 2012-12-18
6823554 Oral devices Phillip M. Braun, Amit Birla, Karen Claire 2004-11-30
6145516 Dental hygiene article Gordon Gerald Guay, Jean L. Spencer 2000-11-14
6018840 Notched dental hygiene article Gordon Gerald Guay 2000-02-01
5941256 Dental hygiene article Gordon Gerald Guay, Jean L. Spencer 1999-08-24