US2602039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crude coal tar dermatological compositions
Assignee: Dome Chemicals Inc
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Filing: 1950-05-24
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Granted: 1952-07-01
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Expires: 1970-05-24
Abstract
No abstract record available.
Inventors
- 👤 Irving B Wershaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:01
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/96; A61K8/97; A61K47/00; A61K47/02; A61K47/06; A61K47/08; A61K47/14; A61K47/26; A61K9/00; A61K9/0012; A61K9/0014; A61Q; A61Q19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A CRUDE COAL TAR COMPOSITION SUITABLE FOR DERMATOLOGICAL USES CONTAINING PER PART OF CRUDE COAL TAR FROM 10 TO 40 PARTS BY WEIGHT OF A WETTING AGENT AND FROM 1 TO 15 PARTS BY WEIGHT OF FINELY DIVIDED TITANIUM DIOXIDE.
Claim 2
Dependent Claim
40 words
A CRUDE COAL TAR COMPOSITION SUITABLE FOR DERMATOLOGICAL USES CONTAINING PER PART OF CRUDE COAL TAR FROM 10 TO 40 PARTS BY WEIGHT OF A WETTING AGENT AND FROM 1 TO 15 PARTS BY WEIGHT OF FINELY DIVIDED TITANIUM DIOXIDE.
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) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |