US3236600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil test method
Assignee: Individual
•
Filing: 1963-05-02
•
Granted: 1966-02-22
•
Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 Shrimpton Wallace
- 👤 Frank Z Patassy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/24; Y; Y10; Y10S; Y10S435/00; Y10S435/808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A PROCESS FOR DETERMINING THE AVAILABLITIY OF MINERAL NUTRIENTS IN SOIL, THE STEPS OF MIXING TOGETHER A TEST SOIL, A CHLOROPHYLL PRODUCING ORGANISM AND A NUTRIENT SOLUTION CONTAINING ALL MINERAL NUTRIENTS NECESSARY TO THE GROWTH OF SAID ORGANISM EXCEPT THE MINERAL NUTRIENT TO BE DETERMINED, EXPOSING THE SAME TO A SOURCE OF LIGHT FOR A PERIOD OF TIME SUFFICIENT TO INDUCE A SUBSTANTIAL GROWTH OF SAID ORGANISM, EXTRACTING THE CHLOROPHYLL FROM SAID ORGANISM WITH AN APPROPRIATE ORGANIC SOLVENT, MEASURING THE DECREASE IN LIGHT TRANSMITTANCE THROUGH SAID EXTRACT LIQUID DUE TO THE PRESENCE OF SAID EXTRACTED CHLOROPHYLL, AND COMPARING SAID DECREASE IN LIGHT TRANSMITTANCE WITH THE DECREASE IN LIGHT TRANSMITTANCE OF A CONTROL SERIES PREPARED ON THE MINERAL NUTRIENT UNDERGOING DETERMINATION.
Claim 2
Dependent Claim
121 words
IN A PROCESS FOR DETERMINING THE AVAILABLITIY OF MINERAL NUTRIENTS IN SOIL, THE STEPS OF MIXING TOGETHER A TEST SOIL, A CHLOROPHYLL PRODUCING ORGANISM AND A NUTRIENT SOLUTION CONTAINING ALL MINERAL NUTRIENTS NECESSARY TO THE GROWTH OF SAID ORGANISM EXCEPT THE MINERAL NUTRIENT TO BE DETERMINED, EXPOSING THE SAME TO A SOURCE OF LIGHT FOR A PERIOD OF TIME SUFFICIENT TO INDUCE A SUBSTANTIAL GROWTH OF SAID ORGANISM, EXTRACTING THE CHLOROPHYLL FROM SAID ORGANISM WITH AN APPROPRIATE ORGANIC SOLVENT, MEASURING THE DECREASE IN LIGHT TRANSMITTANCE THROUGH SAID EXTRACT LIQUID DUE TO THE PRESENCE OF SAID EXTRACTED CHLOROPHYLL, AND COMPARING SAID DECREASE IN LIGHT TRANSMITTANCE WITH THE DECREASE IN LIGHT TRANSMITTANCE OF A CONTROL SERIES PREPARED ON THE MINERAL NUTRIENT UNDERGOING DETERMINATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |