US2867561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfurized tetrathiophosphates
Assignee: Collier Carbon and Chemical Corp
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Filing: 1956-05-28
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Granted: 1959-01-06
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Carleton B Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:59
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AS A NEW COMPOSITION OF MATTER, A SULFURIZED TETRATHIOPHOSPHATE PRODUCT CONTAINING FROM 1 TO ABOUT 8 ATOMS OF CHEMICALLY COMBINED SULFUR PER MOLECULE OF TETRATHIOPHOSPHATE, SAID PRODUCT BEING OBTAINED BY HEATING A MIXTURE COMPRISING ELEMENTAL SULFUR AND A TETRATHIOPHOSPHATE SELECTED FROM THE CLASS CONSISTING OF TRIMETHYL-TETRATHIOPHOSPHATE AND DIMETHYL-TETRATHIOPHOSPHATE AT A REACTION BETWEEN 1 AND ABOUT 8 ATOMIC WEIGHTS OF SULFUR PER MOLECULAR WEIGHT OF SAID TETRATHIOPHOSPHATE AT A REACTION TEMPERATURE BETWEEN ABOUT 150*C. AND ABOUT 200*C. FOR A PERIOD OF TIME BETWEEN ABOUT 1 AND ABOUT 20 HOURS UNDER A PRESSURE BETWEEN ABOUT 5 P. S. I. G. AND THE AUTOGENIC PRESSURE OF THE REACTION MIXTURE AT SAID REACTION TEMPERATURE, SAID CONDITIONS OF TIME AND TEMPERATURE BEING SUFFICIENT TO EFFECT THE FORMATION OF SAID SULFURIZED TETRATHIOPHOSPHATE PRODUCT.
Claim 2
Dependent Claim
127 words
AS A NEW COMPOSITION OF MATTER, A SULFURIZED TETRATHIOPHOSPHATE PRODUCT CONTAINING FROM 1 TO ABOUT 8 ATOMS OF CHEMICALLY COMBINED SULFUR PER MOLECULE OF TETRATHIOPHOSPHATE, SAID PRODUCT BEING OBTAINED BY HEATING A MIXTURE COMPRISING ELEMENTAL SULFUR AND A TETRATHIOPHOSPHATE SELECTED FROM THE CLASS CONSISTING OF TRIMETHYL-TETRATHIOPHOSPHATE AND DIMETHYL-TETRATHIOPHOSPHATE AT A REACTION BETWEEN 1 AND ABOUT 8 ATOMIC WEIGHTS OF SULFUR PER MOLECULAR WEIGHT OF SAID TETRATHIOPHOSPHATE AT A REACTION TEMPERATURE BETWEEN ABOUT 150*C. AND ABOUT 200*C. FOR A PERIOD OF TIME BETWEEN ABOUT 1 AND ABOUT 20 HOURS UNDER A PRESSURE BETWEEN ABOUT 5 P. S. I. G. AND THE AUTOGENIC PRESSURE OF THE REACTION MIXTURE AT SAID REACTION TEMPERATURE, SAID CONDITIONS OF TIME AND TEMPERATURE BEING SUFFICIENT TO EFFECT THE FORMATION OF SAID SULFURIZED TETRATHIOPHOSPHATE PRODUCT.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |