US3284548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making neutral hydroxy substituted triesters of phosphorodithioic acid
Assignee: Lubrizol Corp
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Filing: 1963-05-23
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Granted: 1966-11-08
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Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Emil T Wierber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:49
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2040/00; C10N2040/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE PROCESS OF PREPARING HYDROXY-SUBSTITUTED PHOSPHORODITHIOIC ACID TRIESTERS WHICH COMPRISES THE REACTION AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT -60*C. TO ABOUT 200*C. OF THE AMMONIUM SALT OF A DIALKYL PHOSPHORODITHIOIC ACID WITH AT LEAST ABOUT AN EQUIVALENT AMOUNT OF PROPYLENE, WITH THE LIBERATION AMMONIA FROM SAID SALT OXIDE.
Claim 2
Dependent Claim
51 words
THE PROCESS OF PREPARING HYDROXY-SUBSTITUTED PHOSPHORODITHIOIC ACID TRIESTERS WHICH COMPRISES THE REACTION AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT -60*C. TO ABOUT 200*C. OF THE AMMONIUM SALT OF A DIALKYL PHOSPHORODITHIOIC ACID WITH AT LEAST ABOUT AN EQUIVALENT AMOUNT OF PROPYLENE, WITH THE LIBERATION AMMONIA FROM SAID SALT OXIDE.
References Cited (Backward Citations)
US3004996A
Cited
US2928862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |