Positive charging electrophotographic photoreceptor, electrophotographic cartridge and image forming apparatus
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Mar 29, 2022
Grant Date -
Dec 19, 2019
app pub date -
Aug 29, 2019
filing date -
Aug 29, 2019
priority date (Note) -
In Force
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Abstract
The object of the present invention is to provide a positive charging electrophotographic photoreceptor having high sensitivity, low residual potential, and excellent chargeability, and relates to a positive charging electrophotographic photoreceptor including a conductive support, a photosensitive layer, and a protective layer in this order, the photosensitive layer containing a charge generation substance, a positive hole transport substance, and an electron transport substance in the same layer, in which the positive hole transport substance includes at least one of the compounds represented by any one of the following formulas (1) to (5), and a binder resin of the protective layer is an alcohol-soluble thermoplastic resin, providing that the symbols in the formula are defined in the specification.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MITSUBISHI CHEMICAL CORPORATION | 1-1 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 100-8251 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Nagao, Yuka | Tokyo, JP | 14 | 67 |
# of filed Patents : 14 Total Citations : 67 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- G03G Class
- 0 % this patent is cited more than
- 3 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 29, 2025 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 29, 2029 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 29, 2033 |
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 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Apr 17, 2023 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
Oct 15, 2019 | P | Publication | |
Sep 25, 2019 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Sep 12, 2019 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED |
Aug 23, 2019 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: AWAITING TC RESP, ISSUE FEE PAYMENT VERIFIED |
Aug 06, 2019 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS |
May 20, 2019 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS |
Apr 25, 2019 | AS� | SECURITY INTEREST | free format text: SECURITY AGREEMENT;ASSIGNOR:DD KARMA LLC;REEL/FRAME:049012/0120 Owner name: ASSEMBLED BRANDS CAPITAL FUNDING LLC, NEW YORK Effective Date: Apr 25, 2019 |
Apr 23, 2019 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:DD KARMA LLC;REEL/FRAME:048997/0306 Owner name: JACOB CAPITAL, L.L.C., ILLINOIS Effective Date: Apr 23, 2019 |
Feb 14, 2019 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
Dec 20, 2017 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEVY, DARA;REEL/FRAME:046465/0321 Owner name: DD KARMA LLC, ILLINOIS Effective Date: Dec 20, 2017 |
Dec 20, 2017 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEVY, DARA;REEL/FRAME:044488/0342 Owner name: DD KARMA LLC, ILLINOIS Effective Date: Dec 20, 2017 |
Feb 16, 2017 | P | Published | |
Dec 21, 2015 | F | Filing |

Matter Detail

Renewals Detail
