Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6861032 | Oxygen scavenger and boiler water treatment chemical | Yukimasa Shimura | 2005-03-01 |
| 6540923 | Oxygen scavenger | Masakazu Koizumi, Yukimasa Shimura, Takatoshi Sato | 2003-04-01 |
| 6368552 | Water treating agent and water treating method | Yukimasa Shimura | 2002-04-09 |
| 5989440 | Method of using oxygen scavenger and removing oxygen from water | Yukimasa Shimura | 1999-11-23 |
| 5603862 | Boiler water treatment composition | Takayasu Ueda, Moriyasu Itoh | 1997-02-18 |
| 5264179 | Method of removing dissolved oxygen in a boiler water system | Akitomo Terada | 1993-11-23 |
| 5026523 | Process for inhibiting corrosion of vapor/condensed water system | — | 1991-06-25 |
| 5013481 | Boiler chemicals and method of preventing corrosion of boilers | — | 1991-05-07 |