US3639762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marking consumer items by rendering colorless markings permanently colored with radiation exposure
Assignee: Individual
•
Filing: 1969-02-14
•
Granted: 1972-02-01
•
Expires: 1989-02-14
Abstract
Abstract Consumer items are marked with two or more colorless markings each of which can be rendered colored by exposure to different levels of radiation. Exposure to one level of radiation selectively changes one marking to a substantially permanently colored, visible state without affecting the colorless state of the other markings.
Inventors
- 👤 Burton B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:36
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; B65; B65B; B65B61/00; B65B61/26; G; G09; G09F; G09F3/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
Process for marking consumer items which comprises placing at least two different, normally colorless markings on a consumer item, said markings being unAffected by ambient light conditions but being capable of being rendered substantially permanently colored by exposure to different levels of radiation, and selectively rendering one of said markings substantially permanently colored by exposing said marking to that level of radiation that will render said marking colored without affecting the normally colorless state of the other markings.
Claim 2
Dependent Claim
78 words
Process for marking consumer items which comprises placing at least two different, normally colorless markings on a consumer item, said markings being unAffected by ambient light conditions but being capable of being rendered substantially permanently colored by exposure to different levels of radiation, and selectively rendering one of said markings substantially permanently colored by exposing said marking to that level of radiation that will render said marking colored without affecting the normally colorless state of the other markings.
Claim 3
Dependent Claim
13 words
Process of claim 1 wherein a plurality of consumer items are marked simultaneously.
Claim 4
Dependent Claim
32 words
Process of claim 1 wherein one marking is sensitive to infrared and deactivated by being rendered permanently colorless, by ultraviolet and a second marking is sensitive to ultraviolet and deactivated by infrared.
Claim 5
Dependent Claim
70 words
Consumer item having at least two different, normally colorless markings thereon, said marking being unaffected by ambient light conditions but being capable of being rendered substantially permanently colored by exposure to different levels of radiation, one of said markings being substantially permanently colored by virtue of having been exposed to that level of radiation that will render said marking colored without affecting the normally colorless state of the other markings.
Claim 6
Dependent Claim
70 words
Consumer item having at least two different, normally colorless markings thereon, said marking being unaffected by ambient light conditions but being capable of being rendered substantially permanently colored by exposure to different levels of radiation, one of said markings being substantially permanently colored by virtue of having been exposed to that level of radiation that will render said marking colored without affecting the normally colorless state of the other markings.
Claim 7
Dependent Claim
18 words
Consumer item of claim 4 wherein said markings are sensitive to different levels of ultraviolet and/or infrared radiations.
Claim 8
Dependent Claim
33 words
Consumer item of claim 4 wherein one marking is sensitive to infrared and deactivated by being rendered permanently colorless by ultraviolet and a second marking is sensitive to ultraviolet and deactivated by infrared.
Claim 9
Dependent Claim
87 words
Apparatus for marking consumer items having at least two normally colorless markings thereon, said markings being capable of being rendered substantially permanently colored by exposure to different levels of radiation, which comprises means for advancing said consumer item to a marking station, selective radiation means adjacent said station comprising an activating station and means for activating said radiation means to a level of radiation such that one of said markings will be rendered colored by exposure thereto without affecting the normally colorless state of the other markings.
Claim 10
Dependent Claim
87 words
Apparatus for marking consumer items having at least two normally colorless markings thereon, said markings being capable of being rendered substantially permanently colored by exposure to different levels of radiation, which comprises means for advancing said consumer item to a marking station, selective radiation means adjacent said station comprising an activating station and means for activating said radiation means to a level of radiation such that one of said markings will be rendered colored by exposure thereto without affecting the normally colorless state of the other markings.
Claim 11
Dependent Claim
15 words
Apparatus of claim 7 wherein said radiation means comprises sources of ultraviolet and infrared radiations.
Claim 12
Dependent Claim
11 words
Apparatus of claim 7 wherein said radiation means include filter means.
References Cited (Backward Citations)
US3392501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |