Patent US2976646A successfully refreshed from Google Patents.
US2976646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grass-growing fabric
Assignee: 3M Co
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Filing: 1958-04-01
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Granted: 1961-03-28
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Paul E Hansen
- 👤 Ralph J Oace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:58
CPC Classifications
A; A01; A01C; A01C1/00; A01C1/04; A01G; A01G20/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A THIN LIGHWEIGHT POROUS SEED-CONTAINING GASSGROWING FABRIC ADAPTED FOR USE AS HEREIN DESCRIBED, CONSISTING OF A NONWOVEN POROUS COMPACTED FIBROUS TISSUE WEB OF NONBUNDLED INTERLACED WATER-INSOLUBLE HYDROPHILIC WATER-ABSORPTIVE REGENERATED CELLULOSIC STAPLE FIBERS OF AT LEAST ONE INCH LENGTH, HAVING GRASS SEEDS DISTRIBUTED WITHIN THE FIBROUS BODY OF THE WEB, THE SEED-CONTAINING WEB BEING SIZED WITH A WATER-SOFTENABLE FILM-FORMING COLLOIDAL AGGLUTINANT AND PROVIDES EXTREMELY THIN COATING OF THE FIBERS AND SEEDS AND TEMPORARILY BINDS THE FIBERS TO EACH OTHER AND THE SEEDS TO THE FIBERS SO AS TO UNIFY THE POROUS FIBRAC PRODUCT IN ITS INITIAL DRY STATE.
Claim 2
Dependent Claim
97 words
A THIN LIGHWEIGHT POROUS SEED-CONTAINING GASSGROWING FABRIC ADAPTED FOR USE AS HEREIN DESCRIBED, CONSISTING OF A NONWOVEN POROUS COMPACTED FIBROUS TISSUE WEB OF NONBUNDLED INTERLACED WATER-INSOLUBLE HYDROPHILIC WATER-ABSORPTIVE REGENERATED CELLULOSIC STAPLE FIBERS OF AT LEAST ONE INCH LENGTH, HAVING GRASS SEEDS DISTRIBUTED WITHIN THE FIBROUS BODY OF THE WEB, THE SEED-CONTAINING WEB BEING SIZED WITH A WATER-SOFTENABLE FILM-FORMING COLLOIDAL AGGLUTINANT AND PROVIDES EXTREMELY THIN COATING OF THE FIBERS AND SEEDS AND TEMPORARILY BINDS THE FIBERS TO EACH OTHER AND THE SEEDS TO THE FIBERS SO AS TO UNIFY THE POROUS FIBRAC PRODUCT IN ITS INITIAL DRY STATE.
References Cited (Backward Citations)
US2648165A
Cited
US2826865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |