Patent US4777763A successfully refreshed from Google Patents.
US4777763A
Expired / Lapsed
US
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Plant growing medium
Assignee: Owens Corning
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Filing: 1986-06-17
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Granted: 1988-10-18
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Expires: 2006-06-17
Abstract
Abstract A plant growing medium has a fabricated fibrous product having a density below 4.5 pcf, and preferably below 3.0 pcf, as a root supporting structure. The product comprises a pack of fibers, the fibers having a three-dimensional orientation and at least some of the fibers being glass fibers, and binder binding the fibers to each other at substantially every place of fiber-to-fiber contact.
Inventors
- 👤 Richard F. Shannon
- 👤 G. Fred Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:43
CPC Classifications
A; A01; A01G; A01G24/00; A01G24/10; A01G24/18; A01G24/40; A01G24/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
For use in hydroponic gardening as a plant growing medium, a fabricated fibrous product having a density of less than 4.5 pcf comprising a pack of fibers, the fibers having a three-dimensional orientation and at least some of the fibers being glass fibers, hollow microspheres distributed within and substantially throughout the pack, and binder binding the fibers to each other at substantially every place of fiber-to-fiber contact.
Claim 2
Dependent Claim
67 words
For use in hydroponic gardening as a plant growing medium, a fabricated fibrous product having a density of less than 4.5 pcf comprising a pack of fibers, the fibers having a three-dimensional orientation and at least some of the fibers being glass fibers, hollow microspheres distributed within and substantially throughout the pack, and binder binding the fibers to each other at substantially every place of fiber-to-fiber contact.
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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) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |