US2714077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated non-irritating coal tar pitch
Assignee: Whitehead Brothers Co
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Filing: 1953-09-08
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Granted: 1955-07-26
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Expires: 1973-09-08
Abstract
No abstract record available.
Inventors
- 👤 Burgess P Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
BLAND COAL TAR PITCH, CONTAINING A NOXIOUS SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PHENOLS, CRESOLS AND CHRYSENES, WHICH PITCH IS NON-IRRITATING TO THE HUMAN SKIN CONSISTING ESSENTIALLY OF FINELY DIVIDED PARTICLES OF SUCH PITCH EACH OF WHICH IS INDIVIDUALLY ENVELOPED BY A SEALING COAT OF A MEMBER OF THE GROUP CONSISTING OF AN OIL AND A WAX WHICH IS INSOLUBLE IN SUCH PITCH AND IN WHICH THE PITCH IS INSOLUBLE, THE AMOUNT OF SUCH SEALING COAT RANGING BETWEEN ONE-QUARTER PER CENT AND TWO AND ONE-HALF PER CENT, BY WEIGHT, OF THE AMOUNT OF THE PITCH.
Claim 2
Dependent Claim
96 words
BLAND COAL TAR PITCH, CONTAINING A NOXIOUS SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PHENOLS, CRESOLS AND CHRYSENES, WHICH PITCH IS NON-IRRITATING TO THE HUMAN SKIN CONSISTING ESSENTIALLY OF FINELY DIVIDED PARTICLES OF SUCH PITCH EACH OF WHICH IS INDIVIDUALLY ENVELOPED BY A SEALING COAT OF A MEMBER OF THE GROUP CONSISTING OF AN OIL AND A WAX WHICH IS INSOLUBLE IN SUCH PITCH AND IN WHICH THE PITCH IS INSOLUBLE, THE AMOUNT OF SUCH SEALING COAT RANGING BETWEEN ONE-QUARTER PER CENT AND TWO AND ONE-HALF PER CENT, BY WEIGHT, OF THE AMOUNT OF THE PITCH.
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) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |