US3876755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of ammonium polythiomolbydate
Assignee: US TUNGSTEN Corp A CORP OF
•
Filing: 1973-06-18
•
Granted: 1975-04-08
•
Expires: 1993-06-18
Abstract
Abstract A novel composition of matter, ammonium polythiomolybdate, having the empirical formula 3MoS.sub.4 .2NH.sub.4 OH.
Inventors
- 👤 Charles R Kurtak
- 👤 Laurence D Hartzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:03
CPC Classifications
C; C01; C01G; C01G39/00; C01G39/006; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2002/74; C01P2004/00; C01P2004/30; C01P2004/40; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AS A NOVEL COMPOSITION OF MATTER, AMMONIUM POLYTHIOMOLYBDATE, HAVING THE FORMULA 3MOS4.3NH4OH AND THE FOLLOWING CHARACTERISTIC PROPERITIES INFRARED ABSORPTION MAXIMA 539,505 337 278 (CM-1) SPECIFIC GRAVITY 2.57 SPECIFIC GRAVITY CRYSTALLINE STRUCTURE MONOCLINIC INDICES OF REFRACTION NY=2.3; NA=2.2 NEGATIVE SIGN OF ELONGATION) DIAMAGENTIC DOBS.A ''(REL.) OBS.** 8.76 10 8.27 6 5.44 5 5.16 14.93 0.5 4.85 2 4.35 0.5-1.0 4.23 0.1-0.5 4.11 0.1-0.5 3.34 1.0 3.19 2.0 2.91 3.0 2.86 0 2.75 0.5-0.1 2.58 0.5-1.0 2.52 1.0-1.2 2.45 1.0-2.0 2.42 2.0-3.0 3.37 2.0-3.0 2.36 2..0-3.0 2.287 2.0-3.0 2.04 1.0-2.0 2.04 1.0-2.0 2.01 8.0-1.2 1.99 0.5-1.0 1.94 0.5-1.0 1.91 0.8-1.2 1.895 0.5-1.0 1.863 0.5-1.0 1.831 0.5-1.0 1.800 0.3 1.743 11.692 0.5-1.0 1.643 0.3-0.7
Claim 2
Dependent Claim
111 words
AS A NOVEL COMPOSITION OF MATTER, AMMONIUM POLYTHIOMOLYBDATE, HAVING THE FORMULA 3MOS4.3NH4OH AND THE FOLLOWING CHARACTERISTIC PROPERITIES INFRARED ABSORPTION MAXIMA 539,505 337 278 (CM-1) SPECIFIC GRAVITY 2.57 SPECIFIC GRAVITY CRYSTALLINE STRUCTURE MONOCLINIC INDICES OF REFRACTION NY=2.3; NA=2.2 NEGATIVE SIGN OF ELONGATION) DIAMAGENTIC DOBS.A ''(REL.) OBS.** 8.76 10 8.27 6 5.44 5 5.16 14.93 0.5 4.85 2 4.35 0.5-1.0 4.23 0.1-0.5 4.11 0.1-0.5 3.34 1.0 3.19 2.0 2.91 3.0 2.86 0 2.75 0.5-0.1 2.58 0.5-1.0 2.52 1.0-1.2 2.45 1.0-2.0 2.42 2.0-3.0 3.37 2.0-3.0 2.36 2..0-3.0 2.287 2.0-3.0 2.04 1.0-2.0 2.04 1.0-2.0 2.01 8.0-1.2 1.99 0.5-1.0 1.94 0.5-1.0 1.91 0.8-1.2 1.895 0.5-1.0 1.863 0.5-1.0 1.831 0.5-1.0 1.800 0.3 1.743 11.692 0.5-1.0 1.643 0.3-0.7
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |