Adhesively-laminated core for stator, method of manufacturing the same, and electric motor
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Apr 1, 2025
Grant Date -
Feb 3, 2022
app pub date -
Dec 17, 2019
filing date -
Dec 17, 2019
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
Provided is an electric motor which includes an adhesively-laminated core for a stator having excellent productivity and high mechanical strength and that is thus capable of reducing vibration and noise of an electric motor and suppressing iron loss. The adhesively-laminated core for a stator includes electrical steel sheets laminated on each other and each coated on both sides with an insulation coating, and an adhesion part disposed between the electrical steel sheets adjacent to each other in a stacking direction and configured to cause the electrical steel sheets to be adhered to each other. All sets of the electrical steel sheets adjacent to each other in the stacking direction are adhered by the adhesion part, an adhesive forming the adhesion part includes a fast-curing type adhesive and a thermosetting adhesive, and the adhesion part is partially provided between the electrical steel sheets adjacent to each other in the stacking direction.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NIPPON STEEL CORPORATION | TOKYO 100-8071 |
International Classification(s)

- 2019 Application Filing Year
- H02K Class
- 3215 Applications Filed
- 2232 Patents Issued To-Date
- 69.43 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fujii, Hiroyasu | Tokyo, JP | 60 | 275 |
# of filed Patents : 60 Total Citations : 275 | |||
Takatani, Shinsuke | Tokyo, JP | 52 | 16 |
# of filed Patents : 52 Total Citations : 16 | |||
Takeda, Kazutoshi | Tokyo, JP | 125 | 341 |
# of filed Patents : 125 Total Citations : 341 |
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Patent Citation Ranking
- 0 Citation Count
- H02K Class
- 0 % this patent is cited more than
- < 1 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Oct 1, 2028 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 1, 2032 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 1, 2036 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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Legal Events
Date | Code | Event | Description |
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Feb 14, 2023 | CC | CERTIFICATE OF CORRECTION | |
Jul 05, 2022 | P | Publication | |
Jun 15, 2022 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
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Dec 07, 2021 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: NON FINAL ACTION MAILED |
Aug 20, 2020 | P | Published | |
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Feb 19, 2020 | F | Filing | |
Feb 19, 2020 | FEPP | FEE PAYMENT PROCEDURE | free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Feb 18, 2020 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YAMAMIYA, TAKAHITO;REEL/FRAME:051860/0161 Owner name: ASAHI SEIKO CO., LTD., JAPAN Effective Date: Feb 18, 2020 |
Feb 20, 2019 | PD | Priority Date |

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