US4788790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a dark, uniformly-colored, hardwood mulch
Assignee: Individual
•
Filing: 1986-06-06
•
Granted: 1988-12-06
•
Expires: 2006-06-06
Abstract
Abstract Method of making a dark, uniformly-colored, hardwood mulch by forming a mass of large-fibered hardwood pulp consisting essentially of 20-100% by weight large-fibered, hardwood bark pulp and 0-80% of large-fibered hardwood wood pulp, but preferably at least about 25% by weight of the wood pulp. Water is passed through the mass in an amount greater than that necessary to saturate the mass in order that the excess water may be constantly recycled through the mass of fibers. Recycling continues until the mass of wood fibers and pulp fibers achieve the desired dark, uniform color.
Inventors
- 👤 Charles B. Zeager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:34
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
The method of making a dark, uniformly-colored hardwood mulch comprising: (1) forming a mass of large-fibered, hardwood pulp consisting essentially of 20-100% by weight of large-fibered hardwood bark pulp and 0-80% by weight of large-fibered hardwood wood pulp, most of said large fibers being acicular, (2) passing water through said mass in an amount in excess of that sufficient to saturate said mass; and (3) recycling excess water through said mass until a substantially uniform, dark color is obtained.
Claim 2
Independent Claim
79 words
The method of making a dark, uniformly-colored hardwood mulch comprising: (1) forming a mass of large-fibered, hardwood pulp consisting essentially of 20-100% by weight of large-fibered hardwood bark pulp and 0-80% by weight of large-fibered hardwood wood pulp, most of said large fibers being acicular, (2) passing water through said mass in an amount in excess of that sufficient to saturate said mass; and (3) recycling excess water through said mass until a substantially uniform, dark color is obtained.
Claim 3
Dependent Claim
14 words
The method according to claim 1 wherein said large-fibered, hardwood bark pulp is oak.
Claim 4
Dependent Claim
14 words
The method according to claim 1 wherein said large-fibered, hardwood wood pulp is oak.
Claim 5
Dependent Claim
28 words
The method according to claim 1 wherein said large-fibered, hardwood bark pulp is oak and is present in the mass in an amount of about 25% by weight.
Claim 6
Dependent Claim
21 words
The method according to claim 1 where in said mass contains at least about 25% by weight large-fibered, hardwood wood pulp.
References Cited (Backward Citations)
US1819963A
Cited
US3091436A
Cited
US3393122A
Cited
US4058124A
Cited
US4250662A
Cited
US4339890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |