Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7435784 | Method of ethylene polymerization for producing products having various properties with high productivity and a tubular reactor used therefor | Jin-Suk Lee, Byoung-Yong Chung, Myung-Jae Lee | 2008-10-14 |
| 6897274 | Prepolymerization method of α-olefin | Yoo Kim, Il-Seop Kim | 2005-05-24 |
| 6012996 | Game racket frame made of fiber reinforced plastic | — | 2000-01-11 |
| 5935028 | Badminton racket | — | 1999-08-10 |
| D383511 | Golf club head | Wu-Hsiang Chung, Hsueh-Cheng Liao | 1997-09-09 |
| 5624331 | Composite-metal golf club head | Wu-Hsiang Chung, Hsueh-Cheng Liao | 1997-04-29 |
| 5456591 | Apparatus for preforming a main body of a racket frame from a softened fiber reinforced thermoplastic resin composite tube | — | 1995-10-10 |
| 5410798 | Method for producing a composite golf club head | — | 1995-05-02 |
| 5380389 | Method for manufacturing the shaft unit of a golf club | — | 1995-01-10 |
| 5328176 | Composite golf head | — | 1994-07-12 |
| 5303922 | Composite golf club head | — | 1994-04-19 |
| D344777 | Baseball bat | — | 1994-03-01 |
| 5282913 | Method for producing a connecting tube interconnecting the shaft and the handle of a racket | — | 1994-02-01 |
| 5273280 | Golf club construction | — | 1993-12-28 |
| 5271621 | Golf club head | — | 1993-12-21 |
| 5226659 | Golf club head | — | 1993-07-13 |
| D337143 | Golf club head | — | 1993-07-06 |
| 5184818 | Metal racket | — | 1993-02-09 |
| 5175919 | Method for manufacturing a racket frame | — | 1993-01-05 |
| D332092 | Monitor | — | 1992-12-29 |
| 5163679 | Hollow filled composite racket shaft with restricted intermediate portion | — | 1992-11-17 |
| 5154424 | Head of a golf club | — | 1992-10-13 |
| 5123295 | Bicycle member for mounting a braking device on a bicycle rear fork | — | 1992-06-23 |
| 5122928 | Monitor housing | — | 1992-06-16 |
| 5100162 | Connector for chain stay and seat stay | — | 1992-03-31 |