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公开(公告)号：US11446255B2
公开(公告)日：2022-09-20
申请号：US16813037
申请日：2020-03-09
Applicant: RICOH COMPANY, LTD.
Inventor： Koji Iwasaki , Toshihiro Kanematsu , Rie Kobayashi
IPC: A61K9/70 , A61K31/122 , A61K31/525 , A61K47/34 , A61K47/42
Abstract: Provided is a sheet including a base material comprising a biocompatible material and having at least two independent holes, and a bioactive substance, wherein at least one of the independent holes is an independent hole A containing the bioactive substance, wherein at least one of the independent holes is an independent hole B containing no bioactive substance, wherein a maximum diameter of the independent holes is less than 0.2 mm. Also provided is a sheet laminate including sheets laminated with each other, wherein each of the sheets includes a base material comprising a biocompatible material and having at least two independent holes, and a bioactive substance, wherein at least one of the independent holes is an independent hole A containing the bioactive substance, wherein at least one of the independent holes is an independent hole B containing no bioactive substance.
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公开(公告)号：US10562993B2
公开(公告)日：2020-02-18
申请号：US15908856
申请日：2018-03-01
Applicant: RICOH COMPANY, LTD.
Inventor： Koji Iwasaki
IPC: C08F20/56 , C08F20/30 , C08F26/06 , C08G69/00 , C08K5/21 , C08K5/07 , C08L33/26 , C08L33/14 , C08L39/04 , C08K5/053 , C08L77/00 , G02B1/04
Abstract: Provided is a polymer composition, wherein the polymer composition has a refractive index difference (B−A) of 0.04 or greater but 0.1 or less between a minimum refractive index A of the polymer composition in a temperature range of 5 degrees C. or higher but lower than 30 degrees C. and a maximum refractive index B of the polymer composition in a temperature range of 30 degrees C. or higher but lower than 50 degrees C.
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公开(公告)号：US11795276B2
公开(公告)日：2023-10-24
申请号：US16943570
申请日：2020-07-30
Applicant: RICOH COMPANY, LTD.
Inventor： Koji Iwasaki
CPC classification number: C08J3/128 , C08J3/126 , C08K3/22 , C08K3/36 , C08K5/06 , C12N1/005 , C12N1/16 , C08J2327/18 , C08K2003/2237 , C08K2201/003 , C08K2201/013
Abstract: Provided are composite particles including hydrophobic solid particle A and hydrophobic solid particle B over surface of hydrophobic solid particle A, wherein contact angle CAa of hydrophobic solid particle A with water is 110 degrees≤CAa≤180 degrees, contact angle CAb of hydrophobic solid particle B with water is 110 degrees≤CAb≤180 degrees, ratio (d50a/d50b) of number average particle diameter d50a of hydrophobic solid particle A to number average particle diameter d50b of hydrophobic solid particle B is 10≤(d50a/d50b)≤100, and coating ratio CR of composite particles expressed by Formula 1 is 50%≤CR≤500%,
Coating
ratio
CR
(
%
)
=
π
(
d
50
b
/
2
)
2
4
π
(
d
50
a
/
2
+
d
50
b
/
2
)
2
×
{
X
b
(
g
)
/
Y
b
(
g
/
μm
3
)
/
Z
b
(
μm
3
)
}
{
X
a
(
g
)
/
Y
a
(
g
/
μm
3
)
/
Z
a
(
μm
3
)
}
×
100
Formula
1
where in Formula 1, Xa, Ya, and Za represent mass (g), density (g/cubic micrometer), and volume (cubic micrometer) of hydrophobic solid particle A, and Xb, Yb, and Zb represent mass (g), density (g/cubic micrometer), and volume (cubic micrometer) of hydrophobic solid particle B.-
公开(公告)号：US11274174B2
公开(公告)日：2022-03-15
申请号：US15921104
申请日：2018-03-14
Applicant: Ricoh Company, Ltd.
Inventor： Koji Iwasaki
IPC: C08F220/54 , C08F220/56 , C08F220/28 , C08L101/12 , G02B1/04 , G02B6/12 , C08L71/02 , C08F220/30
Abstract: Provided is a polymer including a temperature-responsive unit in a molecule, wherein the polymer has a refractive index difference (B−A) of 0.01 or greater but 0.2 or less between a minimum refractive index A of the polymer in a temperature range of 5 degrees C. or higher but lower than 30 degrees C. and a maximum refractive index B of the polymer in a temperature range of 30 degrees C. or higher but lower than 50 degrees C.
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