| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 02.00 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Mfg process of polyester film for leader tapes - Bringing said film into contact with an alkaline liquid & etching said film at least on one side to form a tip portion having a thickness > 10 micro.m & which is < 80% of original thickness of film - Wherein depth of etching is controlled differently from position to position - Wherein said film is covered with an alkali resistant protec tive coat on one side to allow said etching to take place on the other side only |
| PATENT PHOTOCOPY | Available on request |
|
Want more information ? Interested in the hidden information ? Click here and do your request. |