US3301831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of sulfurous condensation products which are insoluble in water
Assignee: Hoechst AG
•
Filing: 1962-05-24
•
Granted: 1967-01-31
•
Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Orthner Ludwig
- 👤 Horst Karl
- 👤 Wellens Heino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:52
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/14; C08G75/16; C08G59/00; C08G59/14; C08G59/1405; C08G59/1411; C08G59/18; C08G59/40; C08G59/4007; C08G59/4064; C08G63/00; C08G63/91; C08G63/914; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE PREPARATION OF A WATER-INSOLUBLE CONDENSATE CONTAINING POLYSULFIDE BRIDGES WHICH COMPRISES REACTING A NOVOLACQUER (A) WHICH CONTAINS AT LEAST 3 GROUPS CAPABLER OF REACTING WITH THIOSULFATE WITH (B) A MEMBER SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE AMMONIUM AND ALKALI METAL THIOSULFATES TO FORM (C) A SALT SELECTED FROM THE GROUP CONSISTING OF ARYL AND ALKYL THIOSULFURIC ACID, AND TREATING SAID SALT WITH AN ALKALINE CONDENSING AGENT TO GIVE SAID WATER-INSOLUBLE CONDENSATE.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE PREPARATION OF A WATER-INSOLUBLE CONDENSATE CONTAINING POLYSULFIDE BRIDGES WHICH COMPRISES REACTING A NOVOLACQUER (A) WHICH CONTAINS AT LEAST 3 GROUPS CAPABLER OF REACTING WITH THIOSULFATE WITH (B) A MEMBER SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE AMMONIUM AND ALKALI METAL THIOSULFATES TO FORM (C) A SALT SELECTED FROM THE GROUP CONSISTING OF ARYL AND ALKYL THIOSULFURIC ACID, AND TREATING SAID SALT WITH AN ALKALINE CONDENSING AGENT TO GIVE SAID WATER-INSOLUBLE CONDENSATE.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |