US2556420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of pentavalent antimony compounds for stabilizing vinyl chloride resins
Assignee: Monsanto Chemicals Ltd
•
Filing: 1948-04-15
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Granted: 1951-06-12
•
Expires: 1968-04-15
Abstract
No abstract record available.
Inventors
- 👤 John K Fincke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/59; C08K5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A VINYL CHLORIDE RESIN STABILIZED AGAINST THE EFFECTS OF ULTRA VIOLET LIGHT WHICH COMPRISES A POLYMER IN WHICH AT LEAST 70 PERCENT OF THE MONOMERIC COMPONENTS IS VINYL CHLORIDE, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.1 TO FIVE PERCENT OF A COMPOUND HAVING THE STRUCTURAL FORMULA R3SBX2, IN WHICH R IS A RADICAL OF THE GROUP CONSISTING OF ALICYCLIC, ALIPHATIC, AND HETEROCYCLIC RADICALS IN WHICH X IS A MONOVALENT ANIONIC RADICAL.
Claim 2
Dependent Claim
72 words
A VINYL CHLORIDE RESIN STABILIZED AGAINST THE EFFECTS OF ULTRA VIOLET LIGHT WHICH COMPRISES A POLYMER IN WHICH AT LEAST 70 PERCENT OF THE MONOMERIC COMPONENTS IS VINYL CHLORIDE, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.1 TO FIVE PERCENT OF A COMPOUND HAVING THE STRUCTURAL FORMULA R3SBX2, IN WHICH R IS A RADICAL OF THE GROUP CONSISTING OF ALICYCLIC, ALIPHATIC, AND HETEROCYCLIC RADICALS IN WHICH X IS A MONOVALENT ANIONIC RADICAL.
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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |