| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 11 | |
| #2 | United States | 7 | |
| #3 | France | 6 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Control | |
| #4 | Mechanical elements | |
| #5 | Civil engineering | |
| #6 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Buttons, pins and buckles | |
| #2 | Unspecified technologies | |
| #3 | Travel equipment | |
| #4 | Hand carried bags | |
| #5 | Money sorting | |
| #6 | Nails | |
| #7 | Hairstyling and cosmetic | |
| #8 | Coin-freed | |
| #9 | Animal care | |
| #10 | Bolts for doors or windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Huang Yu-Hwei | 20 |
| #2 | Yu-Hwei Huang | 1 |
| #3 | Hwei Huang Yu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR2740308A1 | Improved workpiece | |
| GB9514806D0 | Keyrings | |
| GB9417682D0 | Personal perfume carrier | |
| GB9414101D0 | Keyring | |
| US5329670A | Structure of clip | |
| FR2714272A3 | Annular purse. | |
| DE4333991A1 | Fastener | |
| GB9302778D0 | Key retaining device capable of direct loading of latch elements | |
| GB9213847D0 | Quick release connector | |
| GB9213405D0 | Key ring assembly | |
| US5224366A | Key ring assembly | |
| US5174139A | Key ring holder with hanger loop for hanging | |
| US5154073A | Plate block key ring | |
| US5129126A | Structure of fastening device for fastening two things together | |
| GB9100978D0 | Keyring assembly | |
| US5050414A | Structure of key-ring assembly | |
| GB9000916D0 | Personal key-ring holder | |
| US5042854A | Latch assembly |