US4316766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article identification method
Assignee: FACTSHORE Ltd C/O BAKER ROOKE
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Filing: 1980-03-04
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Granted: 1982-02-23
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Expires: 2000-03-04
Abstract
Abstract A method of defining an identification marking on an article comprising the location, on a surface of the article in a required area, of a stencil defining a required identification marking; the stencil preferably being temporarily adhered to the surface by means of glue or adhesive, applying to the stencil to contact the surface through the identification marking defined by the stencil, an active substance which is corrosive to, or a solvent of, the material defining said surface of the article; allowing such contact between the active substance and surface to persist for a selected length of time; and thereafter removing the stencil and active substance adhered thereto from the article and cleaning the surface.
Inventors
- 👤 Julian Levin
- 👤 Arnold Franks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:15
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B41; B41M; B41M1/00; B41M1/12; C03; C03C; C03C15/00; C03C15/02; C04B41/53; C04B41/5338; C04B41/80; C04B41/91; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A method of defining an identification marking on an article comprising the steps of: (1) locating on a surface of the article in a required area a flexible plastics foil or film stencil defining a required identification marking in areas where contact occurs between the surface of the article and an active substance wherein the required areas of contact defined by said stencil have a multitude of small perforations formed by electrostatically passing electrons through the stencil material in the required areas thereof; (2) applying to the stencil to contact the surface through the identification marking defined by the stencil, an active substance which is corrosive to, or a solvent of, the material defining said surface of the article; (3) allowing such contact between the active substance and surface to persist for a predetermined length of time; and thereafter (4) removing the stencil and active substance adhered thereto from the article and cleaning the thus marked surface.
Claim 2
Independent Claim
157 words
A method of defining an identification marking on an article comprising the steps of: (1) locating on a surface of the article in a required area a flexible plastics foil or film stencil defining a required identification marking in areas where contact occurs between the surface of the article and an active substance wherein the required areas of contact defined by said stencil have a multitude of small perforations formed by electrostatically passing electrons through the stencil material in the required areas thereof; (2) applying to the stencil to contact the surface through the identification marking defined by the stencil, an active substance which is corrosive to, or a solvent of, the material defining said surface of the article; (3) allowing such contact between the active substance and surface to persist for a predetermined length of time; and thereafter (4) removing the stencil and active substance adhered thereto from the article and cleaning the thus marked surface.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1 in which the stencil is substantially inert relative to both the active substance and the surface of the article.
Claim 4
Dependent Claim
22 words
A method as claimed in claim 2 in which the stencil is temporarily adhered to said surface prior to contact being effected.
Claim 5
Dependent Claim
25 words
A method as claimed in claim 1 in which the active substance is, together with a suitable diluent or carrier, formed into a stiff paste.
Claim 6
Dependent Claim
26 words
A method as claimed in claim 4 in which the active substance is a fluoride and insufficient liquid is present to dissolve all of such fluoride.
Claim 7
Dependent Claim
13 words
A method as claimed in claim 5, wherein said fluoride is ammonium bifluoride.
Claim 8
Dependent Claim
18 words
A method as claimed in claim 1 in which the surface marked is that of a glass surface.
Claim 9
Dependent Claim
21 words
A method as claimed in claim 7 in which the article marked is that of a part of a motor vehicle.
Claim 10
Dependent Claim
19 words
A method as claimed in claim 8 in which the identification marking is a registration number of the vehicle.
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) | 1985-02-22 | 1985-08-24 | 1986-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-22 | 1989-08-24 | 1990-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-22 | 1993-08-24 | 1994-02-23 | $7700.00 | Window Closed / Lapsed |