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Katumi
Katumi Hiramatu, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20080250816 | Optical fiber, optical fiber connecting method, and optical connector - An optical fiber which, at an optical fiber connecting end having a plurality of voids around the periphery of a core, has a light-permeable substance, such as a resin or glass whose refractive index is lower than that of quartz type substances, filled in the voids adjacent to the connecting end. An optical fiber connecting section where an optical fiber having a plurality of voids in a clad around the periphery of a core is connected to another optical fiber, wherein the optical fiber is connected end-to-end to aforesaid another optical fiber through a refractive index matching agent whose refractive index at the minimum temperature in actual use is lower than that of the core. | 10-16-2008 |
| 20080253726 | Optical fiber, optical fiber connecting method, and optical connector - An optical fiber which, at an optical fiber connecting end having a plurality of voids around the periphery of a core, has a light-permeable substance, such as a resin or glass whose refractive index is lower than that of quartz type substances, filled in the voids adjacent to the connecting end. An optical fiber connecting section where an optical fiber having a plurality of voids in a clad around the periphery of a core is connected to another optical fiber, wherein the optical fiber is connected end-to-end to aforesaid another optical fiber through a refractive index matching agent whose refractive index at the minimum temperature in actual use is lower than that of the core. | 10-16-2008 |
Katumi Muramatu, Shizuoka JP
| Patent application number | Description | Published |
|---|---|---|
| 20100073645 | OPTICAL UNIT AND PROJECTOR APPARATUS - An optical unit includes a frame; an optical member having a rectangular plate-shape; and a pair of mount portions formed in the frame, each holding a side of the optical member. Each of the mount portions includes an insertion slot into which an end of the optical member in the width direction is inserted. The insertion slot is formed between first and second walls of the frame. The first wall includes a thickness direction positioning surface that is in contact with one of the surfaces of the optical member in a thickness direction. The second wall includes an inclined surface. The optical member is fixed to the frame using an adhesive in a state in which the one of the surfaces of the optical member is pressed against the thickness direction positioning surface and an end of the optical member in the height direction is pressed against the inclined surface. | 03-25-2010 |
Katumi Tsukada, Gunma JP
| Patent application number | Description | Published |
|---|---|---|
| 20110278031 | TINE - A conventional tine used for management of a broad expanse of grass is manufactured by cutting a long hole-shaped opening in the middle portion of a pipe. As a result, the width of the opening is narrower than the diameter of the pipe, a plug resulting when a tip of the tine bores a hole in the grass does not easily drop out from the opening, and the tine is easily clogged. A tine according to the present invention includes a hollow cylindrical tip insertion ( | 11-17-2011 |
Katumi Yositani, Watarai-Gun JP
| Patent application number | Description | Published |
|---|---|---|
| 20110120846 | BREAKER - A breaker includes a contact unit provided in an airtight container. The contact unit has fixed contact points and a movable contact point which selectively contacts with the fixed contact points. Further, the breaker include a movable shaft having a part projecting outward from the airtight container, for moving the movable contact point to and from the fixed contact points, and a metal member for ensuring airtightness of the airtight container. The metal member has one end fixed to the airtight container and the other end fixed to the movable shaft and is extensible and contractible in accordance with the movement of the movable shaft. Moreover, the breaker includes a lever unit for moving the movable shaft between a closed position where the movable contact point is in contact with the fixed contact points and an open position where the movable contact point is separated from the fixed contact points. | 05-26-2011 |