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At Shirohato, we are constantly aiming for
better-quality product development, and our research teams are at work
day in, day out. This work has resulted in the following patents and
utility models.
Patent: Hygiene mask |
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| Application No. |
Patent Application No. Hei 8-159404 |
| Date filed |
20 June 1996 |
| Publication No. |
Patent Gazette No. Hei 10-5360 |
| Publication date |
13 January 1998 |
| Patent filed by |
Shirohata Co., Ltd. |
| Inventor |
Hiroo Yoko |
| Name of invention |
Hygienic mask |
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Problems to Be Solved by the
Invention
To prevent air being sucked into or blown out of the mask without passing through
the mask itself, and to avoid damaging the filter function of the hygienic mask. |
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Means of Solving the Problems
On a hygienic mask which is fitted with ear strings to the right
and left sides of the body of the mask itself, the top part of the
mask is folded in and downwards, and then folded back inwards and upwards.
A flexible wire is fitted to the top, folded part of the mask, which
opens the center of the foremost edge of the mask and closely supports
the mask from the nose area to the cheek area. In addition, the lower
part of the mask is folded upwards and inwards, and the center of the
folded part is opened, and the mask is fitted and supported from below
the jaw. |
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Utility
model: UV-blocking cover
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| Application No. |
Utility model application No. 2001-1407 |
| Date filed |
16 March 2001 |
| Publication No. |
Registered utility model No. 3080371 |
| Publication date |
4 July 2001 |
| Patent filed by |
Shirohato Co., Ltd |
| Inventor |
Hiroo Yokoi |
| Name of invention |
UV-blocking arm covers |
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Problems to Be
Solved by the Invention
To block out the UV rays that otherwise hit the forearms and backs
of hands when working or exercising outdoors, and thus prevent sunburn
and the resulting skin inflammation and skin cancers, as well as
wrinkles, blemishing, sagging and freckling of the skin on the arms.
In addition to this, to develop an arm cover that allows an appropriate
amount of air to pass through ventilation holes which are opened
as the wearer bends and stretches his or her arms, through the opening
and closing of such ventilation holes, allowing hot air trapped within
the cover to be released and air from outside to replace it, preventing
the humidification of the air inside the covers. |
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Means of Solving the Problems
The middle of arm cover S is made from a fabric material which blocks
UV light, sewn into a cylindrical shape. The middle part 1 has ventilation
hole 2, that allows air to pass in and out freely in sewn part L,
and a netting fabric 3 has been sewn over ventilation hole 2. The
cover is formed in a curve, and the edge of the folded part at the
top is fitted with a flexible wire, which opens the center of the
foremost edge of the mask and closely supports the mask from the
nose area to the cheek area. In addition, the lower part of the mask
is folded upwards and inwards, and the center of the folded part
is opened, and the mask is fitted and supported from below the jaw. |
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Patent:
Method for manufacturing a hygienic mask
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| Application No. |
Patent application No. 2001-190927 |
| Date filed |
25 June 2001 |
| Publication No. |
Patent publication 2003-742 |
| Publication date |
7 January 2003 |
| Patent filed by |
Shirohato Co., Ltd. |
| Inventor |
Shiro Yokoi |
| Name of invention |
Method for manufacturing a hygienic mask |
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Problems to Be
Solved by the Invention
To provide a method for manufacturing a hygienic mask in a simple
and swift manner, and which allows an increase in the number of breathable
sheets incorporated into the mask's structure, as well as the use
of breathable sheets with fold marks, which have been conventionally
difficult to use. The method should allow machining of the masks
without damaging the fixed position of the base of the folds. |
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Means of Solving the Problems
A plurality of breathable sheets are sewn together along a plurality
of fold lines before the folding process is implemented on the mask,
facilitating a total sewing process in regard to a mask that has
been designed to fit easily to the curves and protrusions on the
face, which requires multiple folds and is comprised of multiple
layers of breathable sheets, which trap harmful substances such
as pollen, fine dust, and the like. |
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Utility
model: Hygienic mask
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| Application No. |
2002-2677 |
| Date filed |
10 May 2002 |
| Publication No. |
Registered utility model No. 3089858 |
| Publication date |
28 August 2002 |
| Patent filed by |
Shirohato Co., Ltd. |
| Inventor |
Shiro Yokoi |
| Name of invention |
Hygienic mask |
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Problems to Be Solved by the
Invention
To improve the general fit of a mask while utilizing a simplified
method of manufacturing that minimizes increased processing costs,
and at the same time improve the effectiveness of the mask in eliminating
pollen and other microscopic particles. |
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Means of Solving the Problems
On a hygienic mask made from woven and non-woven fabrics, (1) on
the body of the mask, the top part of the mask is folded in and downwards,
and then folded back inwards and upwards to form the mask shape.
When in use, the center of the foremost edge of the aforementioned
folded part is opened, and the mask is closely fitted to the nose
area to the cheek area. (2) In addition, the lower part of the mask
contains a filter pocket, which can be fitted with a superior filter
material that eliminates pollen and other microscopic particles. |
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Utility
model: Hygienic mask
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| Application No. |
2003-271363 |
| Date filed |
24 September 2003 |
| Publication No. |
Registered utility model No. 3100600 |
| Publication date |
14 January 2004 |
| Patent filed by |
Shirohato Co., Ltd. |
| Inventor |
Shiro Yokoi |
| Name of invention |
Hygienic mask |
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Problems to Be Solved by the
Invention
To provide a hygienic mask which has an improved fit to the face,
based on a mask manufactured from woven and non-woven fabrics,
with ear strings fitted to the right and left edges of the mask. |
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Means of Solving the Problems
On a mask made from woven and non-woven fabrics which is large enough
to cover both the mouth and nostrils, and which is provided with
two ear strings attached at the left and right edges 1a which are
of a specified height, the mask is made in such a way as to be long
enough to reach to the area adjacent to the ear when worn. When worn,
the upper part of the mask is fitted to the protrusion of the nose
by the use of plastic-deforming synthetic resin, which is applied
to the fabric material as a coating to maintain the band plate shape
4, and is affixed to the aforementioned upper part. |
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