Inventor
Joel Wittkamp
Inventor
Raleigh, NC, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC12primary
LOC1233%
LOC0922%
B60DVehicle connections11%
B62BHand-propelled vehicles, e.g. hand carts or perambulators11%
B65FGathering or removal of domestic or like refuse11%
LOC0811%
PatentTitleYear
D0480960'Dispenser for compartmentalized constituents'2003D0420945'Walker wheel'2000D0398726'Waste container trolley'19985,704,625'Trash container carrier'1998D0382465'Caster cover'1997D0381168'Cart'1997D0379705'Post for cart'1997D0306025'Antenna rotator control unit'1990D0282363'Telephone handset'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to IBM (1)· patent assignee history
1986–2000Based in Raleigh, NC, US· patent location history
1990Patents assigned to AVNET INC (1)· patent assignee history
1997–1998Patents assigned to RUBBERMAID COMMERCIAL PRODUCTS INC (3)· patent assignee history
2000Patents assigned to RUBBERMAID COMMERCIAL PROD LLC (1)· patent assignee history
2003Patents assigned to MIXTEK SYSTEM LLC (1)· patent assignee history
2003Based in Morrisville, NC, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RUBBERMAID COMMERCIAL PRODUCTS INC | 3 | 1997–1998 |
| AVNET INC | 1 | 1990 |
| IBM | 1 | 1986 |
| MIXTEK SYSTEM LLC | 1 | 2003 |
| RUBBERMAID COMMERCIAL PROD LLC | 1 | 2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Raleigh, NC, US | 8 | 1986–2000 |
| Morrisville, NC, US | 1 | 2003 |