US3232925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated lignin-containing product and production thereof
Assignee: Georgia-Pacific LLC
•
Filing: 1960-03-31
•
Granted: 1966-02-01
•
Expires: 1980-03-31
Abstract
No abstract record available.
Inventors
- 👤 King Ellis Gray
- 👤 Adolphson Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PRODUCING PRODUCTS FROM SULFONATED LIGNIN-CONTAINING MATERIAL, COMPRISING THE STEPS OF SEPARATING SAID MATERIAL INTO AT LEAST TWO FRACTIONS OF SULFONATED LIGNIN-CONTAINING MATERIAL HAVING DIFFERENT MOLECULAR WEIGHT CHARACTERISTICS, AND FORMING A SALT OF THE SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND COMBINATIONS THEREOF.
Claim 2
Dependent Claim
57 words
A PROCESS FOR PRODUCING PRODUCTS FROM SULFONATED LIGNIN-CONTAINING MATERIAL, COMPRISING THE STEPS OF SEPARATING SAID MATERIAL INTO AT LEAST TWO FRACTIONS OF SULFONATED LIGNIN-CONTAINING MATERIAL HAVING DIFFERENT MOLECULAR WEIGHT CHARACTERISTICS, AND FORMING A SALT OF THE SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND COMBINATIONS THEREOF.
References Cited (Backward Citations)
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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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |