US5120154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trafficway conformable polymeric marking sheet
Assignee: 3M Co
•
Filing: 1991-06-26
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Granted: 1992-06-09
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Expires: 2011-06-26
Abstract
Abstract Conformable marking sheet comprising a microporous thermoplastic polymer base sheet having a network of interconnected pores. The marking sheet has a low yield stress, making it conformable to rough surfaces. The pores of the base sheet can be filled with a diluent (wax) or they may have the diluent removed, for example by extraction. The construction may further comprise an adhesive on the bottom and a top marking indicium layer comprising a polymeric binder in which is partially embedded a multiplicity of retroflective lens elements, e.g., transparent microspheres.
Inventors
- 👤 James E. Lasch
- 👤 James M. Kaczmarczik
- 👤 James A. Klein
- 👤 James M. Jonza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/506; E01F9/512; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
The combination of a substrate surface for vehicular or pedestrian traffic and a conformable marking sheet adhered to said substrate surface, said marking sheet having a top surface and a bottom surface and comprising a base sheet comprising microporous thermoplastic polymer, which marking sheet is characterized by: A. exhibiting, when tested before adhering it to the substrate surface and using standard tensile strength testing apparatus under standard test conditions, at least 25% inelastic deformation after being stretched once to 115% of original sample length; and B. a top surface useful as a marking indicium.
Claim 2
Dependent Claim
94 words
The combination of a substrate surface for vehicular or pedestrian traffic and a conformable marking sheet adhered to said substrate surface, said marking sheet having a top surface and a bottom surface and comprising a base sheet comprising microporous thermoplastic polymer, which marking sheet is characterized by: A. exhibiting, when tested before adhering it to the substrate surface and using standard tensile strength testing apparatus under standard test conditions, at least 25% inelastic deformation after being stretched once to 115% of original sample length; and B. a top surface useful as a marking indicium.
Claim 3
Dependent Claim
85 words
The combination of a substrate surface for vehicular or pedestrian traffic and a conformable marking sheet adhered to said substrate surface, said marking sheet having a top surface useful as a marking indicium, and comprising a base sheet comprising microporous thermoplastic polymer, which base sheet is characterized by exhibiting, before adhering the marking sheet to the substrate surface and using a standard tensile strength testing apparatus under standard test conditions, at least 25% inelastic deformation after being stretched once to 115% of original sample length.
Claim 4
Dependent Claim
85 words
The combination of a substrate surface for vehicular or pedestrian traffic and a conformable marking sheet adhered to said substrate surface, said marking sheet having a top surface useful as a marking indicium, and comprising a base sheet comprising microporous thermoplastic polymer, which base sheet is characterized by exhibiting, before adhering the marking sheet to the substrate surface and using a standard tensile strength testing apparatus under standard test conditions, at least 25% inelastic deformation after being stretched once to 115% of original sample length.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |