Patent US4661389A successfully refreshed from Google Patents.
US4661389A
Expired / Lapsed
US
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Multiple-layer reinforced laminate
Assignee: Leucadia Inc
•
Filing: 1985-07-10
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Granted: 1987-04-28
•
Expires: 2005-07-10
Abstract
Abstract Laminated sheet product reinforced with composite heat sealable plastic strands and process for preparation thereof.
Inventors
- 👤 Richard C. Mudge
- 👤 Timothy K. Fair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:46
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/09; B29C48/10; B29C48/13; B29C48/25; B29C48/30; B29C48/301; B29C70/00; B29C70/68; B29C70/685; B29C70/687; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29K2105/206; B29L; B29L2028/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/152; Y10T442/155; Y10T442/164; Y10T442/169
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A multiple layer, reinforced laminate produced by heat bonding and pressure sealing a composite structure comprising in combination: a reinforcing network of interconnecting thermoplastic strands sandwiched between layers of outer covering material, the strands being comprised of an inner reinforcing core of polymeric material and an outer extrudable material of a heat sealable type, the inner and outer materials being co-extruded by continuous extrusion in laminar relationship to form the strand network, whereby the inner cores are integrally joined to each other at points of interconnection by virtue of the extrusion formation thereof.
Claim 2
Dependent Claim
93 words
A multiple layer, reinforced laminate produced by heat bonding and pressure sealing a composite structure comprising in combination: a reinforcing network of interconnecting thermoplastic strands sandwiched between layers of outer covering material, the strands being comprised of an inner reinforcing core of polymeric material and an outer extrudable material of a heat sealable type, the inner and outer materials being co-extruded by continuous extrusion in laminar relationship to form the strand network, whereby the inner cores are integrally joined to each other at points of interconnection by virtue of the extrusion formation thereof.
Claim 3
Dependent Claim
14 words
The laminate of claim 1 in which the strand network comprises extruded oriented netting.
Claim 4
Dependent Claim
53 words
The laminate of claim 1 in which the strand structure is tri-extruded in laminar form and is comprised of at least two different polymers, the inner core polymer having a softening temperature which is higher than that of the outer polymer, the outer polymer comprising generally oppositely disposed layer segments on the core.
Claim 5
Dependent Claim
22 words
The laminate of claim 3 in which the core polymer comprises polypropylene and the outer polymer is ethylene methyl acrylate copolymer (EMA).
Claim 6
Dependent Claim
16 words
The laminate of claim 3 in which the outer covering material is of the absorbent type.
Claim 7
Dependent Claim
14 words
The laminate of claim 3 in which the outer covering material comprises tissue stock.
Claim 8
Dependent Claim
22 words
The laminate of claim 6 in which the core polymer comprises polypropylene and the outer polymer is ethylene methyl acrylate copolymer (EMA).
Claim 9
Dependent Claim
12 words
The laminate of claim 1 in which the core polyme comprises polypropylene.
Claim 10
Dependent Claim
17 words
The laminate of claim 1 in which the outer extrudable material is ethylene methyl acrylate copolymer (EMA).
Claim 11
Dependent Claim
23 words
The laminate of claim 1 in which the core polymer comprises polypropylene and the outer extrudable material is ethylene methyl acrylate copolymer (EMA).
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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) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |