Universal impression coping system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 4, 2001
Grant Date -
N/A
app pub date -
Jul 13, 1999
filing date -
Jul 13, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A universal impression coping system and impression coping assembly is provided for taking dental impressions of a dental restoration site and which me be used efficaciously for both open- and closed-tray impression techniques. An inexpensive transfer impression pin and coping assembly is further provided having registration means providing unique orientation of the transfer coping and visual and tactile feedback for assuring accurate dental impressions using the closed tray impression technique.
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 | |
---|---|---|
NOBEL BIOCARE AB | BOHUSGATAN - 15 SE-402 26 GOTEBORG |
International Classification(s)

- 1999 Application Filing Year
- A61C Class
- 530 Applications Filed
- 243 Patents Issued To-Date
- 45.85 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kumar, Ajay | Palmdale, CA | 493 | 11870 |
# of filed Patents : 493 Total Citations : 11870 |
Cited Art Landscape
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Patent Citation Ranking
- 29 Citation Count
- A61C Class
- 75.66 % this patent is cited more than
- 24 Age
Forward Cite Landscape
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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 |
---|---|---|---|
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
- (1) a polyionic material, in alternating layers, where one layer is a cationic polymer containing —NHR1 or —C(O)NHR2 groups, where R1 and R2 are independently hydrogen, straight- or branch-chain C1-C10 alkyl, phenyl, benzyl, or C6-C14 aryl; and another layer is an anionic polymer containing —COOH or —COOR groups, where R is straight- or branch-chain C1-C10 alkyl, phenyl, benzyl, or C6-C14 aryl; and(2) At least two full bilayers are coated on the substrate; and(3) the layers are crosslinked through amide, imide, urea, or carbamate bonds; and(4) at least 1% of the amine or amide N—H groups in the coating are converted to N—X, where X is Cl or Br.

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