Patent US4822652A successfully refreshed from Google Patents.
US4822652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary wares of acrylic or methacrylic resins and method for obtaining them
Assignee: Arkema SRL
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Filing: 1986-11-17
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Granted: 1989-04-18
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Expires: 2006-11-17
Abstract
Abstract The present invention relates to sanitary wares of acrylic or methacrylic resins, such as bathtubs, shower trays, sinks, and so forth, comprising a sheet of thermoformed resin and a reinforcing layer of fiberglass-filled foamed unsaturated polyester.
Inventors
- 👤 Carlo Sempio
- 👤 Romeo Vailati
- 👤 Tullo Ronchetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:03
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/308; B32B5/00; B32B5/18; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0264; B32B2305/00; B32B2305/02; B32B2305/028; B32B2305/08; B32B2555/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/249986; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A sanitary ware comprised of a first layer of at least one sheet of a thermoformed acrylic or methacrylic resin, and a reinforcing layer of a foamed, fiberglass-filled unsaturated polyester resin bonded to said first layer, said thermoformed resin being contacted by water when said sanitary ware is in use.
Claim 2
Dependent Claim
50 words
A sanitary ware comprised of a first layer of at least one sheet of a thermoformed acrylic or methacrylic resin, and a reinforcing layer of a foamed, fiberglass-filled unsaturated polyester resin bonded to said first layer, said thermoformed resin being contacted by water when said sanitary ware is in use.
Claim 3
Dependent Claim
12 words
The sanitary ware of claim 1 wherein the thermoformed resin is polymethylmethacrylate.
Claim 4
Dependent Claim
60 words
The sanitary ware according to claim 1 wherein said first layer is a cast sheet or extruded sheet, or co-extruded sheets consisting of at least two sheets wherein a first sheet of said co-extruded layer is the water contact layer and is selected from polymethylmethacrylate and shock-resistant polymethylmethacrylate, and said additional sheets are selected from shock-resistant polymethylmethacrylate, ABS and MBS.
Claim 5
Dependent Claim
22 words
The sanitary ware according to claim 1 wherein the fiberglass/polyester resin ratio is comprised within the range of from 10/90 to 40/60.
Claim 6
Dependent Claim
17 words
The sanitary ware according to claim 4 wherein the fiberglass/polyester resin ratio is from 15/85 to 25/75.
Claim 7
Independent Claim
37 words
A method of making a sanitary ware comprising: thermoforming a sheet of an acrylic or methacrylic resin, and then spraying a reinforcing layer of foamed unsaturated fiberglass filled polyester resin onto a back of said thermoformed sheet.
Claim 8
Independent Claim
37 words
A method of making a sanitary ware comprising: thermoforming a sheet of an acrylic or methacrylic resin, and then spraying a reinforcing layer of foamed unsaturated fiberglass filled polyester resin onto a back of said thermoformed sheet.
Claim 9
Dependent Claim
30 words
The method of claim 6 which further comprises heating said sheet prior to thermoforming; setting said fiberglass filled polyester resin, and then trimming said ware to produce a commerical product.
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |