US4689079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing impression taking and molding materials and dental diagnosing/treating chemical materials used in the method
Assignee: Sankin Industry Co Ltd
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Filing: 1985-11-12
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Granted: 1987-08-25
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Expires: 2005-11-12
Abstract
Abstract Powder of chemical material for impression taking and molding for teeth is previously packed with a water-soluble film in an amount determined by each clinical treatment. A desired impression taking or molding material is obtained by putting such pack or packs in a proper amount of water and properly kneading them.
Inventors
- 👤 Mitsuo Buma
- 👤 Sadayuki Yuda
- 👤 Masatsune Sato
- 👤 Mitsuo Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:55
CPC Classifications
A; A61; A61C; A61C9/00; A61K; A61K6/00; A61K6/90
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
66 words
A method of preparing an impression taking material for use in dental treatment by kneading with a proper amount of water a desired quantity of powder of alginic acid salt which becomes plastic when mixed with water, which comprises using one package of said powder selected from a plural types of packages of water-soluble film each containing said powder whose quantity corresponds to respective dental treatment.
Claim 2
Independent Claim
66 words
A method of preparing an impression taking material for use in dental treatment by kneading with a proper amount of water a desired quantity of powder of alginic acid salt which becomes plastic when mixed with water, which comprises using one package of said powder selected from a plural types of packages of water-soluble film each containing said powder whose quantity corresponds to respective dental treatment.
Claim 3
Independent Claim
73 words
A method of preparing an impression taking material for use in dental treatment by kneading with a proper amount of water a desired quantity of powder of alginic acid salt which becomes plastic when mixed with water, which compresses using a required number of packages of a water-soluble film containing said powder of minumum quantity required among every dental treatment, said required number being determined corresponding to dental treatment to be carried out.
Claim 4
Independent Claim
73 words
A method of preparing an impression taking material for use in dental treatment by kneading with a proper amount of water a desired quantity of powder of alginic acid salt which becomes plastic when mixed with water, which compresses using a required number of packages of a water-soluble film containing said powder of minumum quantity required among every dental treatment, said required number being determined corresponding to dental treatment to be carried out.
Claim 5
Dependent Claim
51 words
An impression taking material for use in dental treatment comprising a powder of alginic acid salt having a property of becoming plastic when mixed with water and subsequently hardening with time, wherein said powder is of a quantity required for one impression taking which is packed in a water soluble film.
Claim 6
Dependent Claim
51 words
An impression taking material for use in dental treatment comprising a powder of alginic acid salt having a property of becoming plastic when mixed with water and subsequently hardening with time, wherein said powder is of a quantity required for one impression taking which is packed in a water soluble film.
Claim 7
Dependent Claim
59 words
An impression taking material for use in dental treatment comprising a powder of alginic acid salt having a property of becoming plastic when mixed with water and subsequently hardening with time, wherein said powder is of minimum unit, an integral multiple of which is a required amount for each impression taking, which is packed in a water soluble film.
Claim 8
Dependent Claim
59 words
An impression taking material for use in dental treatment comprising a powder of alginic acid salt having a property of becoming plastic when mixed with water and subsequently hardening with time, wherein said powder is of minimum unit, an integral multiple of which is a required amount for each impression taking, which is packed in a water soluble film.
Claim 9
Dependent Claim
30 words
The impression taking material as set forth in claim 4, wherein there are provided a plurality of said packed powder of a minimum unit, which are connected to each other.
Claim 10
Dependent Claim
29 words
The impression taking material as set forth in claim 5, wherein a line of perforations is provided in each connecting portion between said powder packs of a minimum unit.
Claim 11
Dependent Claim
91 words
An impression taking material for use in dental treatment comprising a powder of alginic acid salt having a property of becoming plastic when mixed with water and subsequently hardening with time, wherein said powder of a maximum quantity for very impression taking is packed in a water-soluble film package, said package being provided with a partitioning section for dividing said powder of maximum quantity into a plurality of minimum quantity units for every impression taking, an integral multiple of said minimum quantity units being a required quantity for each impression taking.
Claim 12
Dependent Claim
91 words
An impression taking material for use in dental treatment comprising a powder of alginic acid salt having a property of becoming plastic when mixed with water and subsequently hardening with time, wherein said powder of a maximum quantity for very impression taking is packed in a water-soluble film package, said package being provided with a partitioning section for dividing said powder of maximum quantity into a plurality of minimum quantity units for every impression taking, an integral multiple of said minimum quantity units being a required quantity for each impression taking.
Claim 13
Dependent Claim
36 words
The impression taking material as set forth in claim 7, wherein said maximum quantity is a quantity required for impression taking of one jaw and said minimum quantity unit is one third of said maximum quantity.
Claim 14
Dependent Claim
21 words
The impression taking material as set forth in claim 7, wherein said partitioning section is provided with a line of perforations.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |