Inventor
Gregory Holderfield
Inventor
Chicago, IL, US
Overview
Patents· 46 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC23primary
LOC2328%
LOC1823%
LOC0713%
LOC3110%
LOC148%
F04DNon-positive-displacement pumps5%
LOC245%
B02CCrushing, pulverising, or disintegrating in general3%
B05BSpraying apparatus3%
LOC133%
PatentTitleYear
D0616926'Shredder'2010D0613821'Set of nozzles for a portable sprayer'2010D0604763'Shredder'2009D0602518'Shredder'2009D0602074'Shredder'2009D0602073'Shredder'2009D0598048'Shredder'2009D0591335'Shredder'20097,478,766'Portable sprayer with connector mounting beams'2009D0583859'Shredder'2008D0568961'Handle for a portable sprayer'2008D0539603'Hand mixer'2007D0536063'Portable sprayer'2007D0488957'Blender jar'2004D0483214'Coffeemaker'2003D0478468'Blender base with arched face'2003D0478467'Hand mixer'2003D0475884'4-slice toaster'2003D0474640'Two-slice toaster'2003D0454465'Beverage dispenser'2002D0451748'Refrigerated juice dispensing machine'2001D0451991'Portable fan'2001D0437298'Control unit for electric blanket'2001D0435834'Remote control for electric blanket'2001D0425225'Lighting unit'2000D0421648'Humidifier'2000D0417442'Transit vehicle card reader'19995,988,542'Document shredding devices'1999D0410246'Paper shredder'1999D0409577'Remote control transmitter'1999D0402369'Housing for a device for measuring the concentration of an analyte in a sample of blood'1998D0399960'Housing for a device for measuring the concentration of an analyte in a sample of blood'1998D0395496'Fan support rod'1998D0388511'Humidifier housing unit'1997D0385342'Humidifier'1997D0384140'Humidifier'1997D0383201'Dual humidifier tank unit'1997D0382635'Humidifier'1997D0378778'Humidifier housing'1997D0377973'Humidifier tank'1997D0377683'Stand for a portable electric fan with a swivel mount'1997D0377211'Humidifier tank'1997D0374921'Humidifier housing'1996D0374071'Portable electric fan with a swivel mount'19965,558,501'Portable ceiling fan'19965,518,370'Portable electric fan with swivel mount'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2000Patents assigned to DURACRAFT CORP (14)· patent assignee history
1996–2010Based in Oak Park, IL, US· patent location history
1996–2000Based in Palatine, IL, US· patent location history
1997–2004Based in Chicago, IL, US· patent location history
1998Patents assigned to ABBOTT LAB (2)· patent assignee history
2001–2007Patents assigned to SUNBEAM PRODUCTS INC (9)· patent assignee history
2007–2010Patents assigned to CLARKE CONSUMER PRODUCTS INC (4)· patent assignee history
2008–2010Patents assigned to FELLOWES INC (8)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DURACRAFT CORP | 14 | 1996–2000 |
| SUNBEAM PRODUCTS INC | 9 | 2001–2007 |
| FELLOWES INC | 8 | 2008–2010 |
| CLARKE CONSUMER PRODUCTS INC | 4 | 2007–2010 |
| ABBOTT LAB | 2 | 1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chicago, Illinois, US | 19 | 1997–2004 |
| Oak Park, Illinois, US | 18 | 1996–2010 |
| Palatine, Illinois, US | 9 | 1996–2000 |