Patent US4303723A successfully refreshed from Google Patents.
US4303723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound barrier material
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1980-02-04
•
Granted: 1981-12-01
•
Expires: 2000-02-04
Abstract
Abstract A sound barrier material for a road or a trainway comprised of a barium sulfate loaded chlorinated polyethylene laminated to each side of a foraminous metal member with a coating of about 0.05 to 8.13 centimeters in gauge.
Inventors
- 👤 Paul E. Oliveira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/02; B32B25/00; B32B25/10; B32B15/04; B32B15/08; B32B27/00; B32B27/18; B32B27/32; E; E01; E01F; E01F15/00; E01F15/02; E01F15/06; E01F15/065; E01F8/00; E01F8/0005; E01F8/0017; B32B2260/00; B32B2260/04; B32B2260/046; B32B2305/00; B32B2305/38; B32B2307/00; B32B2307/10; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/121; Y10T442/122; Y10T442/131
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
39 words
A sound and safety barrier material comprised of a metallic foraminous member sandwiched between two polyvinyl chloride impregnated mesh sheets, said sheets having a coating thereon of about 0.05 to 7.7 centimeters of a barium sulfate loaded chlorinated polyethylene.
Claim 2
Dependent Claim
39 words
A sound and safety barrier material comprised of a metallic foraminous member sandwiched between two polyvinyl chloride impregnated mesh sheets, said sheets having a coating thereon of about 0.05 to 7.7 centimeters of a barium sulfate loaded chlorinated polyethylene.
Claim 3
Dependent Claim
36 words
The sound barrier material of claim 1 wherein 50 to 200 parts of barium sulfate is present in each 100 parts of chlorinated polyethylene and said chlorinated polyethylene contains from 36 to 48 percent of chlorine.
Claim 4
Dependent Claim
20 words
The sound barrier material of claim 1 wherein the material is stabilized with epichlorohydrin-bisphenol-A resin and contains chlorinated paraffin wax.
Claim 5
Dependent Claim
16 words
The sound barrier material of claim 1 wherein the metallic foraminous member is a wire sheet.
Claim 6
Dependent Claim
15 words
The sound barrier material of claim 1 wherein each of the mesh sheets is glass.
Claim 7
Dependent Claim
20 words
The sound barrier material of claim 5 wherein the material is stabilized with epichlorohydrin-bisphenol-A resin and contains chlorinated paraffin wax.
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) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |