Inventor
King Biu Mak
Inventor
Yau Tong, Kowloon, HK
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC19primary
LOC1936%
B43LArticles for writing or drawing upon27%
A21CMachines or equipment for making or processing doughs9%
A47JKitchen equipment9%
B43MBureau accessories not otherwise provided for9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
PatentTitleYear
7,455,087'Electric sharpener for writing instruments'20086,898,856'Letter opener'20056,637,481'Apparatus for sharpening a writing instrument'20036,397,480'Mechanism for sharpening a writing instrument'2002D0457190'Clip dispenser'2002D0452531'Clip dispenser'2001D0434444'Pencil sharpener casing'20005,993,188'Food extruding device'1999D0405830'Electric pencil sharpener'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2008Patents assigned to MAK KING BIU (3)· patent assignee history
1999–2005Based in Yau Tong, Kowloon, HK· patent location history
2002–2003Based in Kowloon, HK· patent location history
2008Patents assigned to MAK CHUNG MING (1)· patent assignee history
2008Patents assigned to MAK RONALD CHUNG YIN (1)· patent assignee history
2008Based in Hong Kong, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MAK KING BIUself | 3 | 1999–2008 |
| MAK CHUNG MING | 1 | 2008 |
| MAK RONALD CHUNG YIN | 1 | 2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yau Tong, Kowloon, HK | 6 | 1999–2005 |
| Kowloon, HK | 2 | 2002–2003 |
| Hong Kong, CN | 1 | 2008 |