IP Library › Granted Patent US 12,221,593
Granted Patent B2
US 12,221,593 · App. 18/515,787 · Granted Feb 11, 2025

Compositions for facilitating the removal of a fingerprint

Inventors: Andreas Buthe (Minneapolis, MN); Ping Wang (Hudson, OH); Songtao Wu (Ann Arbor, MI); Hongfei Jia (Ann Arbor, MI); Masahiko Ishii (Okazaki, JP); Minjuan Zhang (Ann Arbor, MI)
Assignees: TOYOTA MOTOR CORPORATION; REGENTS OF THE UNIVERSITY OF MINNESOTA
C11D3/38618C08G18/6225C08G18/792C09D175/04C11D3/04C11D3/044C11D3/2003C11D3/201C11D3/37C11D3/386C11D3/38627C11D3/43C11D7/04C11D7/261C12Y304/24027D06L4/40D06M16/003C11D2111/18
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Quick Facts
Patent No.
US 12,221,593
App. No.
18/515,787
Granted
Feb 11, 2025
Kind
B2
Abstract

Bioactive coatings that include a base and a protein associated with the base for actively promoting the removal of organic stains are provided. In aspects, bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.

Claims (8)

1. A composition for facilitating removal of a fingerprint from a surface, the composition comprising:

a substrate or a coating formed of an organic crosslinkable polymer resin; and

a lipase capable of enzymatically degrading a fat or oil component of a fingerprint, said lipase associated with said substrate or coating, wherein said lipase is uniformly dispersed in said substrate or coating in protein aggregates having an average diameter of 10 micrometers or less.

2. The composition of claim 1 wherein said lipase is entrapped within and crosslinked to said substrate or coating.

3. The composition of claim 1 wherein said lipase-associated substrate or coating has a surface activity of about 200 Units/gram.

4. The composition of claim 1 wherein said lipase is present at 0.1-50 weight percent of the total weight of said substrate or coating.

5. The composition of claim 1 wherein the lipase is present at 1-20 weight percent of the total weight of the substrate or coating.

6. The composition of claim 1 wherein the lipase is present at 2-8 weight percent of the total weight of the substrate or coating.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 6, 2024
From: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
To: TOYOTA MOTOR CORPORATION
Reel/Frame 068507/0189 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2023
From: ISHII, MASAHIKO
To: TOYOTA MOTOR CORPORATION
Reel/Frame 065634/0291 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2023
From: JIA, HONGFEI; ZHANG, MINJUAN
To: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Reel/Frame 065634/0401 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2023
From: BUTHE, ANDREAS; WANG, PING; WU, SONGTAO
To: REGENTS OF THE UNIVERSITY OF MINNESOTA
Reel/Frame 065634/0521 →
Continuity (8)
Division 17233598 · Apr 19, 2021
Division 15810700 · Nov 13, 2017
Continuation In Part 14812087 · Jul 29, 2015
Continuation 13229277 · Sep 9, 2011
Continuation In Part 15193242 · Jun 27, 2016
Continuation 13567341 · Aug 6, 2012
Continuation In Part 12820101 · Jun 21, 2010
Related Publication 20240158722A1 · May 16, 2024
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