US3798837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bio-active silvicultural container
Assignee: 3M Co
•
Filing: 1973-02-26
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Granted: 1974-03-26
•
Expires: 1993-02-26
Abstract
Abstract A silvicultural container is provided which is useful for the germination of seeds and nurturing of seedling plants until such time as they are transplanted, container and all, into the field. The container is of such construction and composition that it can be triggered to provide a balanced nutrient source for soil bacteria and the delicate young seedling at the time of transplantation.
Inventors
- 👤 R Oehmke
- 👤 R Oestead
- 👤 E Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:33
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/02; A01G9/029; A01G9/0291; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/28; Y10; Y10S; Y10S220/00; Y10S220/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A bio-active plant container comprising: a. a nutrient core member which has walls comprising: i. about 30-70 percent by weight of water-soluble, film-forming proteinaceous material, ii. about 10-20 percent by weight of carbohydrate, iii. about 5-15 percent by weight of phosphate salt, and iv. about 0-30 percent by weight of fibrous material, wherein the carbon-to-nitrogen ratio in said nutrient core member is less than about 12 to 1; and b. a frangible, water-insoluble shell encapsulating the walls of said nutrient core member.
Claim 2
Dependent Claim
82 words
A bio-active plant container comprising: a. a nutrient core member which has walls comprising: i. about 30-70 percent by weight of water-soluble, film-forming proteinaceous material, ii. about 10-20 percent by weight of carbohydrate, iii. about 5-15 percent by weight of phosphate salt, and iv. about 0-30 percent by weight of fibrous material, wherein the carbon-to-nitrogen ratio in said nutrient core member is less than about 12 to 1; and b. a frangible, water-insoluble shell encapsulating the walls of said nutrient core member.
Claim 3
Dependent Claim
26 words
A plant container in accordance with claim 1 wherein said core member comprises about 30-70 percent by weight of hide glue, gelatin, casein, or mixtures thereof.
Claim 4
Dependent Claim
13 words
A plant container in accordance with claim 2 wherein said carbohydrate comprises glycerine.
Claim 5
Dependent Claim
24 words
A plant container in accordance with claim 2 wherein said phosphate salt is selected from the group consisting of K2HPO4, K3P04, KH2P04, and Ca3(P04)2.
Claim 6
Dependent Claim
29 words
A plant container in accordance with claim 2 wherein said fibrous material comprises wood pulp fiber and represents about 10 to 30 percent by weight of said core member.
Claim 7
Dependent Claim
29 words
A plant container in accordance with claim 2 wherein said carbohydrate comprises glycerine and said phosphate salt is selected from the group consisting of K2HP04, K3P04, KH2P04, and Ca3(P04)2.
Claim 8
Dependent Claim
20 words
A plant container in accordance with claim 2 wherein said shell comprises a blend of paraffin wax and microcrystalline wax.
Claim 9
Dependent Claim
13 words
A plant container in accordance with claim 1 wherein said shell comprises wax.
Claim 10
Dependent Claim
42 words
A method for transplanting a growing plant comprising: a. providing a plant container of claim 1 having a growing plant therein, b. fracturing the frangible shell of said plant container, and c. placing said plant container in soil in the desired environment.
References Cited (Backward Citations)
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US2688209A
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US3331155A
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |