Patent US3537924A successfully refreshed from Google Patents.
US3537924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perchlorate preparation
Assignee: Monsanto Research Corp
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Filing: 1962-07-02
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Granted: 1970-11-03
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Byrne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:53
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
THE METHOD OF PREPARING AND HANDLING HYDRAZINE PERCHLORATE AS AN ANHYDROUS MATERIAL WHICH COMPRISES METATHESIZING A SALT OF HYDRAZINE WITH A METAL PERCHLORATE SALT IN AN INERT ORGANIC SOLVENT, AND MAINTAINING SUCH ORGANIC SOLVENT ASSOCIATED WITH SAID HYDRAZINE PERCHLORATE DURING SUBSEQUENT HANDLING.
Claim 2
Independent Claim
42 words
THE METHOD OF PREPARING AND HANDLING HYDRAZINE PERCHLORATE AS AN ANHYDROUS MATERIAL WHICH COMPRISES METATHESIZING A SALT OF HYDRAZINE WITH A METAL PERCHLORATE SALT IN AN INERT ORGANIC SOLVENT, AND MAINTAINING SUCH ORGANIC SOLVENT ASSOCIATED WITH SAID HYDRAZINE PERCHLORATE DURING SUBSEQUENT HANDLING.
Claim 3
Independent Claim
74 words
THE METHOD OF PREPARING A LITHIUM PERCHLORATE/HYDRAZINE PERCHLORATE EUTECTIC WHICH COMPRISES ADDING LITHIUM PERCHLORATE TO A SOLUTION OF HYDRAZINE PERCHLORATE IN AN INERT POLAR ORGANIC SOLVENT, IN AN AMOUNT CALCULATED TO SUPPLY FROM 1 TO 2 MOLES OF LITHIUM PERCHLORATE PER MOLE OF HYDRAZINE PERCHLORATE, AND THEREAFTER REMOVING SAID SOLVENT BY EVAPORATION TO LEAVE A RESIDUE COMPRISING A EUTECTIC OF LITHIUM PERCHLORATE WITH HYDRAZINE PERCHLORATE SELECTED FROM THE 1:1 TO 1:2 MOLAR RATIO EUTECTICS.
Claim 4
Independent Claim
74 words
THE METHOD OF PREPARING A LITHIUM PERCHLORATE/HYDRAZINE PERCHLORATE EUTECTIC WHICH COMPRISES ADDING LITHIUM PERCHLORATE TO A SOLUTION OF HYDRAZINE PERCHLORATE IN AN INERT POLAR ORGANIC SOLVENT, IN AN AMOUNT CALCULATED TO SUPPLY FROM 1 TO 2 MOLES OF LITHIUM PERCHLORATE PER MOLE OF HYDRAZINE PERCHLORATE, AND THEREAFTER REMOVING SAID SOLVENT BY EVAPORATION TO LEAVE A RESIDUE COMPRISING A EUTECTIC OF LITHIUM PERCHLORATE WITH HYDRAZINE PERCHLORATE SELECTED FROM THE 1:1 TO 1:2 MOLAR RATIO EUTECTICS.
References Cited (Backward Citations)
US3138498A
Cited
US3436172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |