Patent US3231640A successfully refreshed from Google Patents.
US3231640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pelleting pentachlorophenol
Assignee: Dow Chemical Co
•
Filing: 1962-10-03
•
Granted: 1966-01-25
•
Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 Adam F Klopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/24; C07C39/26; C07C39/27; C07C39/36; B; B01; B01J; B01J2/00; B01J2/02; B01J2/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF PELLETING PENTACHLOROPHENOL WHICH COMPRISES INTRODUCING MOLTEN PARTICULATE PENTACHLOROPHENOL INTO THE UPPER PORTION OF A VERTICAL COLUMN, INTRODUCING INTO SAID COLUMN, AT A POINT BELOW THE PENTACHLOROPHENOL INLET, A FOG OF LIQUID WATER, PROVIDING MEANS WHEREBY SAID WATER FOG IS CAUSED TO MOVE UPWARD IN SAID COLUMN, AND ALLOWING SAID PARTICULATE PENTACHLOROPHENOL TO
Claim 2
Independent Claim
55 words
A METHOD OF PELLETING PENTACHLOROPHENOL WHICH COMPRISES INTRODUCING MOLTEN PARTICULATE PENTACHLOROPHENOL INTO THE UPPER PORTION OF A VERTICAL COLUMN, INTRODUCING INTO SAID COLUMN, AT A POINT BELOW THE PENTACHLOROPHENOL INLET, A FOG OF LIQUID WATER, PROVIDING MEANS WHEREBY SAID WATER FOG IS CAUSED TO MOVE UPWARD IN SAID COLUMN, AND ALLOWING SAID PARTICULATE PENTACHLOROPHENOL TO
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |