US2567362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extracting pigments from plants
Assignee: Individual
•
Filing: 1945-05-03
•
Granted: 1951-09-11
•
Expires: 1965-05-03
Abstract
No abstract record available.
Inventors
- 👤 Sophia S Berkman
- 👤 Boris S Berkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:50
CPC Classifications
C; C09; C09B; C09B61/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR PRODUCING SUBSTANTIALLY OXYAND PHOTO-STABLE ACTIVE PIGMENT UNITS FROM RAW MATERIAL OF PLANT ORIGIN WHICH COMPRISES (A) COMMINUTING FRESH RAW PLANT MATERIAL TO SUBSTANTIALLY COLLOIDAL SIZE AND ADDING WATER TO FORM A HYDROSOL THEREFROM OF SUBSTANTIALLY UNDECOMPOSED COLLOIDAL DISPERSOIDS CONTAINING PIGMENT, PROTEIN AND LIPIN, (B) REMOVING SOME EXTRANEOUS MATTER THEREFROM LEAVING A HYDROSOL CONTAINING SUBSTANTIALLY ONLY SUCH COLLOIDAL DISPERSOIDS, (C) SEPARATING SAID COLLOIDAL DISPERSOIDS CONSTITUTING ACTIVE PIGMENT UNITS FROM THE DISPERSION MEDIUM CONTAINING REMAINING EXTRANEOUS MATERIAL, AND (D) DRYING SAID DISPERSED COLLOIDS UNDER CONDITIONS TO AVOID DECOMPOSITION, TO SUBSTANTIALLY COMPLETE DRYNESS.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PRODUCING SUBSTANTIALLY OXYAND PHOTO-STABLE ACTIVE PIGMENT UNITS FROM RAW MATERIAL OF PLANT ORIGIN WHICH COMPRISES (A) COMMINUTING FRESH RAW PLANT MATERIAL TO SUBSTANTIALLY COLLOIDAL SIZE AND ADDING WATER TO FORM A HYDROSOL THEREFROM OF SUBSTANTIALLY UNDECOMPOSED COLLOIDAL DISPERSOIDS CONTAINING PIGMENT, PROTEIN AND LIPIN, (B) REMOVING SOME EXTRANEOUS MATTER THEREFROM LEAVING A HYDROSOL CONTAINING SUBSTANTIALLY ONLY SUCH COLLOIDAL DISPERSOIDS, (C) SEPARATING SAID COLLOIDAL DISPERSOIDS CONSTITUTING ACTIVE PIGMENT UNITS FROM THE DISPERSION MEDIUM CONTAINING REMAINING EXTRANEOUS MATERIAL, AND (D) DRYING SAID DISPERSED COLLOIDS UNDER CONDITIONS TO AVOID DECOMPOSITION, TO SUBSTANTIALLY COMPLETE DRYNESS.
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Cited
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Cited
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Cited
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Cited
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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) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |