Powder composition for the preparation of an opaque dental porcelain in the form of a paste
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 21, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1996
filing date -
Jun 8, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A powder composition for the preparation of an opaque dental porcelain, containing as its components one or more feldspar frits consisting of a number of feldspar frits of different chemical compositions and different physical properties; CeO.sub.2 as the opacifier, optionally additional opacifiers; and optionally pigments.
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 | |
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VITA ZAHNFABRIK H RAUTER GMBH & CO | SPITAGLASSE 3 BAD SACKINGEN D-971 |
International Classification(s)

- 1996 Application Filing Year
- C03C Class
- 192 Applications Filed
- 108 Patents Issued To-Date
- 56.25 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Herbst, Kerstin | Bensheim, DE | 1 | 12 |
# of filed Patents : 1 Total Citations : 12 | |||
Thiel, Norbert | Bad Sackingen, DE | 36 | 414 |
# of filed Patents : 36 Total Citations : 414 |
Cited Art Landscape
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Patent Citation Ranking
- 12 Citation Count
- C03C Class
- 47.66 % this patent is cited more than
- 28 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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Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
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Jan 04, 2021 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: MICROENTITY |
Jan 04, 2021 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Nov 29, 2020 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Nov 29, 2020 |
Jul 20, 2020 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: MICROENTITY |
Nov 29, 2016 | I | Issuance | |
Nov 09, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jul 07, 2016 | P | Published | |
Aug 11, 2014 | F | Filing | |
Sep 04, 2013 | PD | Priority Date |

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