Patent US3230037A successfully refreshed from Google Patents.
US3230037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pbcor-pbo
Assignee: —
•
Filing: —
•
Granted: 1966-01-18
•
Expires: 1983-01-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:20
CPC Classifications
C; C01; C01G; C01G21/00; C01G21/14; C09; C09C; C09C1/00; C09C1/14; C09C1/16; C01P; C01P2006/00; C01P2006/32; C01P2006/37; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE PROCESS FOR THE PRODUCTION OF WHITE DEHYDRATED HIGHLY BASIC LEAD CARBONATE HAVING THE FORMULA PBCO3.PBO, WHICH COMPRISES HEATING A PRODUCT SELECTED FROM THE GROUP CONSISTING OF WHITE LEAD POWDER (APPROX. PBCO3)2.PB(OH)2 AND MIXTURES OF WHITE LEAD POWDER (APPROX. PBCO3)2.PB(OH)2 WITH ANHYDROUS LEAD CARBONATE (PBCO3) TO TEMPERATURES OF BETWEEN 200 AND 320*C., WHEREBY CO2 AND WATER OF HYDRATION ARE SPLIT OFF TO FORM SAID DEHYDRATED HIGHLY BASIC LEAD CARBONATE.
Claim 2
Dependent Claim
69 words
THE PROCESS FOR THE PRODUCTION OF WHITE DEHYDRATED HIGHLY BASIC LEAD CARBONATE HAVING THE FORMULA PBCO3.PBO, WHICH COMPRISES HEATING A PRODUCT SELECTED FROM THE GROUP CONSISTING OF WHITE LEAD POWDER (APPROX. PBCO3)2.PB(OH)2 AND MIXTURES OF WHITE LEAD POWDER (APPROX. PBCO3)2.PB(OH)2 WITH ANHYDROUS LEAD CARBONATE (PBCO3) TO TEMPERATURES OF BETWEEN 200 AND 320*C., WHEREBY CO2 AND WATER OF HYDRATION ARE SPLIT OFF TO FORM SAID DEHYDRATED HIGHLY BASIC LEAD CARBONATE.
References Cited (Backward Citations)
US2091797A
Cited
GB500961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |