Patent US4431766A successfully refreshed from Google Patents.
US4431766A
Expired / Lapsed
US
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Coded polymeric material and method
Assignee: Stauffer Chemical Co
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Filing: 1979-11-05
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Granted: 1984-02-14
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Expires: 1999-11-05
Abstract
Abstract Polymeric materials, for example, vinyl materials contain an added trace amount of a compound which is detectable by an instrumental method of analysis in the absence of the step of freshly exposing a surface of the sample and without substantial interference from other ingredients in the vinyl material. The incorporation of the added trace compound allows for coding of the material and provides a means to later identify the manufacturer of the film without the need to affix more visible identification means thereto.
Inventors
- 👤 William F. Christie
- 👤 Lawrence A. Smalheiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:30
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A polymeric material, that can be formed into a final commercial product, which is coded for later identification by an instrumental method of analysis by the presence therein of an added trace amount of a zirconium silicate coding element only which is detectable and identifiable by said instrumental method of analysis in the absence of the step of freshly exposing a surface of the material and without substantial interference from other ingredients in the material.
Claim 2
Dependent Claim
75 words
A polymeric material, that can be formed into a final commercial product, which is coded for later identification by an instrumental method of analysis by the presence therein of an added trace amount of a zirconium silicate coding element only which is detectable and identifiable by said instrumental method of analysis in the absence of the step of freshly exposing a surface of the material and without substantial interference from other ingredients in the material.
Claim 3
Dependent Claim
99 words
A vinyl chloride polymeric material, that can be formed into a final commercial product, which is coded for later identification by an instrumental method of analysis by the presence therein of an added trace amount of a zirconium silicate coding element only which is present at from about at least 35 parts by weight per one million parts by weight of polymeric material and which is detectable and identifiable by said instrumental method of analysis in the absence of the step of freshly exposing a surface of the material and without substantial interference from other ingredients in the material.
Claim 4
Dependent Claim
99 words
A vinyl chloride polymeric material, that can be formed into a final commercial product, which is coded for later identification by an instrumental method of analysis by the presence therein of an added trace amount of a zirconium silicate coding element only which is present at from about at least 35 parts by weight per one million parts by weight of polymeric material and which is detectable and identifiable by said instrumental method of analysis in the absence of the step of freshly exposing a surface of the material and without substantial interference from other ingredients in the material.
Claim 5
Dependent Claim
100 words
A vinyl chloride polymeric material, that can be formed into a final commercial product, which is coded for later identification by an instrumental method of analysis by the presence therein of an added trace amount of a zirconium silicate coding element only which is present at from about 35 to about 200 parts by weight per one million parts by weight of polymeric material and which is detectable and identifiable by said instrumental method of analysis in the absence of the step of freshly exposing a surface of the material and without substantial interference from other ingredients in the material.
Claim 6
Dependent Claim
100 words
A vinyl chloride polymeric material, that can be formed into a final commercial product, which is coded for later identification by an instrumental method of analysis by the presence therein of an added trace amount of a zirconium silicate coding element only which is present at from about 35 to about 200 parts by weight per one million parts by weight of polymeric material and which is detectable and identifiable by said instrumental method of analysis in the absence of the step of freshly exposing a surface of the material and without substantial interference from other ingredients in the material.
References Cited (Backward Citations)
US3366573A
Cited
US3663685A
Cited
US3861886A
Cited
US3772200A
Cited
US3897284A
Cited
US3772099A
Cited
US3862066A
Cited
US3835782A
Cited
US3912927A
Cited
US4053433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |