Patent US6231631B1 successfully refreshed from Google Patents.
US6231631B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compost excellent in fertilizing activity and production method thereof
Assignee: JFE Engineering Corp
•
Filing: 1998-03-31
•
Granted: 2001-05-15
•
Expires: 2018-03-31
Abstract
Abstract Compost of the present invention has a weight ratio (C/N) of carbon (C) to nitrogen (N) of 9.5 or less on completion of a compost treatment. Further, a method of the present invention for producing the compost comprises the steps of providing a compost material having the weight ratio (C/N) of carbon (C) to nitrogen (N) of 10.5 or less, and carrying out the compost treatment of the compost material by maintaining water content thereof substantially at 30-60%. Thus, the present invention provides the compost excellent in fertilizing activity and the production method thereof.
Inventors
- 👤 Kazuyoshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:51
CPC Classifications
C; C05; C05F; C05F7/00; C05F17/00; C05F17/70; C05F17/90; C05F17/964; C05F17/971; C05F17/986; Y; Y02; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/40
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
116 words
A method for producing compost having fertilizing activity from high ratio compost material having a weight ratio (C/N) of carbon (C) to nitrogen (N) of greater than 10.5, comprising the steps of: adding low ratio compost material having a weight ratio (C/N) of carbon (C) to nitrogen (N) of less than 10.5 to the high ratio compost material to form a mixed compost with a weight ratio (C/N) of 10.5 or less; and carrying out a compost treatment of the mixed compost material by maintaining water content of the compost material, to produce a compost having a weight ratio (C/N) of carbon (C) and nitrogen (N) of 9.5 or less on completion of the compost treatment.
Claim 2
Independent Claim
116 words
A method for producing compost having fertilizing activity from high ratio compost material having a weight ratio (C/N) of carbon (C) to nitrogen (N) of greater than 10.5, comprising the steps of: adding low ratio compost material having a weight ratio (C/N) of carbon (C) to nitrogen (N) of less than 10.5 to the high ratio compost material to form a mixed compost with a weight ratio (C/N) of 10.5 or less; and carrying out a compost treatment of the mixed compost material by maintaining water content of the compost material, to produce a compost having a weight ratio (C/N) of carbon (C) and nitrogen (N) of 9.5 or less on completion of the compost treatment.
Claim 3
Dependent Claim
32 words
A method according to claim 1 , wherein the step of carrying out the compost treatment includes the step of: maintaining the water content of the mixed compost material substantially at 30-60%.
Claim 4
Dependent Claim
55 words
A method according to claim 1 , wherein the water content of the compost material is maintained by at least one method selected from the group consisting of a method of adding water as a liquid to the mixed compost material and a method of exposing the mixed compost material to a gas for humidification.
Claim 5
Dependent Claim
28 words
The method of claim 3 , wherein the water content of the compost mixture is maintained by adding water as a liquid in the form of a spray.
Claim 6
Dependent Claim
29 words
A method according to claim 1 , further comprising the step of: adjusting the water content of the mixed compost material to 30-60% in advance of the compost treatment.
Claim 7
Dependent Claim
56 words
A method according to claim 5 , wherein the water content of the mixed compost material is adjusted by at least one method selected from the group consisting of a method of adding water as a liquid to the mixed compost material and a method of exposing the mixed compost material to a gas for humidification.
Claim 8
Dependent Claim
28 words
The method of claim 6 , wherein the water content of the compost mixture is maintained by adding water as a liquid in the form of a spray.
Claim 9
Dependent Claim
39 words
A method according to claim 5 , wherein the water content of the mixed compost material is adjusted by using at least one selected from the group consisting of natural drying, a dry organic material, and an indirect dryer.
Claim 10
Dependent Claim
36 words
A method according to claim 5 , further including the step of: drying the mixed compost material until the water content falls to 10-30% in advance of adjusting the water content of the mixed compost material.
Claim 11
Dependent Claim
22 words
A method according to claim 9 , further including the step of: sifting the mixed compost material after drying the compost material.
Claim 12
Dependent Claim
33 words
A method according to claim 1 , wherein the low ratio compost material is at least one selected from the group consisting of sewage sludge (dehydrated cakes), chicken manure and scraps from restaurants.
Claim 13
Dependent Claim
22 words
A method according to claim 11 , wherein the high ratio compost material is agricultural waste with a C/N ratio exceeding 10.5.
Claim 14
Dependent Claim
16 words
The method according to claim 12 , wherein the low ratio compost material is chicken manure.
Claim 15
Dependent Claim
16 words
A method according to claim 12 , wherein the low ratio compost material is sewage sludge.
Claim 16
Independent Claim
99 words
A method for fertilizing comprising the steps of: adding low ratio compost material having a weight ratio (C/N) of carbon (C) to nitrogen (N) of less than 10.5 to the high ratio compost material to form a mixed compost with a weight ratio (C/N) of 10.5 or less: carrying out a compost treatment of the mixed compost material by maintaining water content of the compost material, to produce a compost having a weight ratio (C/N) of carbon (C) and nitrogen (N) of 9.5 or less on completion of the compost treatment; and applying the compost to soil for cultivation.
Claim 17
Independent Claim
99 words
A method for fertilizing comprising the steps of: adding low ratio compost material having a weight ratio (C/N) of carbon (C) to nitrogen (N) of less than 10.5 to the high ratio compost material to form a mixed compost with a weight ratio (C/N) of 10.5 or less: carrying out a compost treatment of the mixed compost material by maintaining water content of the compost material, to produce a compost having a weight ratio (C/N) of carbon (C) and nitrogen (N) of 9.5 or less on completion of the compost treatment; and applying the compost to soil for cultivation.
References Cited (Backward Citations)
US4203376A
Cited
DE3439720A1
Cited
US4971616A
Cited
US5057141A
Cited
EP0445102A1
Cited
US5100455A
Cited
US5169782A
Cited
US5534437A
Cited
US5538860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-05-14 | 2004-11-13 | 2005-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-14 | 2008-11-13 | 2009-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-05-14 | 2012-11-13 | 2013-05-15 | $7700.00 | Window Closed / Lapsed |