Inventor
Philip J. Ruhoff
Inventor
Minneapolis, MN, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Dprimary
C09DCoating compositions, e.g. paints, varnishes or lacquers41%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds24%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds12%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
C08LCompositions of macromolecular compounds6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
10,421,872Stain resistant coating composition20198,637,609'Blends of acrylic latices and polyurethane dispersions for coatings'20145,096,959'Hydrolysis resistant alkyl resin coating composition'19925,082,922'Modified-acrylate polymers and coating compositions made therefrom'19924,981,887'Cationic electrodeposition compositions for producing chip-resistant films'19914,914,139'Modified alkyd cationic electrodeposition compositions for producing chip-resistant films'19904,511,692'Cationic electrodeposition composition'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1992Patents assigned to VALSPAR CORP (5)· patent assignee history
1985–1992Based in Minneapolis, MN, US· patent location history
2014–2019Patents assigned to SHERWIN WILLIAMS CO (2)· patent assignee history
2014Patents assigned to PERUMAL PADMAJA (1)· patent assignee history
2014Patents assigned to RUHOFF PHILIP J (1)· patent assignee history
2014–2019Based in Shaker Heights, OH, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| VALSPAR CORP | 5 | 1985–1992 |
| SHERWIN WILLIAMS CO | 2 | 2014–2019 |
| PERUMAL PADMAJA | 1 | 2014 |
| RUHOFF PHILIP Jself | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Minneapolis, Minnesota, US | 5 | 1985–1992 |
| Shaker Heights, OH, US | 2 | 2014–2019 |