David A. Sheldon has been granted 10 US patents while listed as an inventor at Norton . The first was granted in 1991 and the most recent in March 2008. David A. Sheldon ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list David A. Sheldon in Worcester, MA, US.
Patents per Year Patents granted per year, 1991 to 2008 Bar chart with a peak of 2 patents in 1996. peak 2 1991: 1 patents 1991 1992: 1 patents 1992 1993: 1 patents 1993 1995: 1 patents 1995 1996: 2 patents 1996 1998: 1 patents 1998 2004: 1 patents 2004 2007: 1 patents 2007 2008: 1 patents 2008
Issued Patents All Time
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Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date
7344573 Impregnation of grinding wheels using supercritical fluids Jodi A. Vecchiarelli , Thomas G. Kinisky 2008-03-18
7275980 Abrasive articles with novel structures and methods for grinding Anne M. Bonner , Eric Bright , Edward L. Lambert , Dean S. Matsumoto , Xavier Orlhac 2007-10-02
6773473 Supercritical fluid extraction Thomas G. Kinisky , Jodi A. Vecchiarelli 2004-08-10
5711774 Silicon carbide abrasive wheel — 1998-01-27
5573561 Sol-gel alumina abrasive wheel with improved corner holding Robert S. Lundberg , Xiaoming Li 1996-11-12
5536283 Alumina abrasive wheel with improved corner holding Robert S. Lundberg 1996-07-16
5401284 Sol-gel alumina abrasive wheel with improved corner holding Robert S. Lundberg , Xiaoming Li 1995-03-28
5203886 High porosity vitrified bonded grinding wheels Carole J. Markhoff-Matheny , Renato Terragni 1993-04-20
5129919 Bonded abrasive products containing sintered sol gel alumina abrasive filaments Paul W. Kalinowski , Muni S. Ramakrishnan , Charles V. Rue , Brian E. Swanson 1992-07-14
5035723 Bonded abrasive products containing sintered sol gel alumina abrasive filaments Paul W. Kalinowski , Muni S. Ramakrishnan , Charles V. Rue , Brian E. Swanson 1991-07-30