Composition of temporary crown materials
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 19, 2021
Grant Date -
Mar 4, 2021
app pub date -
Oct 16, 2019
filing date -
Aug 30, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is directed to a composition of temporary crown materials, comprising a powder reagent and a liquid reagent; wherein the powder reagent comprises PMMA and an initiator, and the liquid reagent comprises MMA, a catalyst, and a plasticizer; wherein the plasticizer is a citrate ester compound. The composition of temporary crown materials of the present invention has high hardness, high toughness, high flexural strength and excellent biocompatibility.
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 | |
---|---|---|
NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGY | 1 SEC 3 ZHONGXIAO E RD TAIPEI 10608 |
International Classification(s)

- 2019 Application Filing Year
- A61K Class
- 21422 Applications Filed
- 10424 Patents Issued To-Date
- 48.67 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fang, Hsu-Wei | Taipei, TW | 12 | 0 |
# of filed Patents : 12 Total Citations : 0 | |||
Lin, Meng-Chun | Taipei, TW | 7 | 24 |
# of filed Patents : 7 Total Citations : 24 | |||
Lin, Yuan-Min | Taipei, TW | 4 | 10 |
# of filed Patents : 4 Total Citations : 10 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- A61K Class
- 0 % this patent is cited more than
- 4 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Apr 19, 2025 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 19, 2029 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 19, 2033 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
---|---|---|---|
Oct 08, 2003 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Sep 08, 2003 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Sep 07, 2003 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Sep 07, 2003 |
Mar 26, 2003 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Sep 07, 1999 | I | Issuance | |
Apr 20, 1992 | F | Filing | |
Sep 10, 1986 | PD | Priority Date |

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