Inventor
David A. Sheldon
Inventor
Millbury, MA, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B24Dprimary
B24DTools for grinding, buffing or sharpening48%
C04BLime, magnesia24%
C09KMaterials for miscellaneous applications, not provided for elsewhere19%
B24BMachines, devices, or processes for grinding or polishing5%
Y02PClimate change mitigation technologies in the production or processing of goods5%
PatentTitleYear
7,344,573'Impregnation of grinding wheels using supercritical fluids'20087,275,980'Abrasive articles with novel structures and methods for grinding'20076,773,473'Supercritical fluid extraction'20045,711,774'Silicon carbide abrasive wheel'19985,573,561'Sol-gel alumina abrasive wheel with improved corner holding'19965,536,283'Alumina abrasive wheel with improved corner holding'19965,401,284'Sol-gel alumina abrasive wheel with improved corner holding'19955,203,886'High porosity vitrified bonded grinding wheels'19935,129,919'Bonded abrasive products containing sintered sol gel alumina abrasive filaments'19925,035,723'Bonded abrasive products containing sintered sol gel alumina abrasive filaments'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1998Patents assigned to NORTON CO (6)· patent assignee history
1991–1993Based in Worcester, MA, US· patent location history
1995–2008Based in Millbury, MA, US· patent location history
2004–2008Patents assigned to SAINT GOBAIN ABRASIVES TECH CO (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NORTON CO | 6 | 1991–1998 |
| SAINT GOBAIN ABRASIVES TECH CO | 3 | 2004–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Millbury, Massachusetts, US | 7 | 1995–2008 |
| Worcester, Massachusetts, US | 3 | 1991–1993 |