Patent US3262900A successfully refreshed from Google Patents.
US3262900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masking compositions for printed circuits
Assignee: Individual
•
Filing: 1963-12-19
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Granted: 1966-07-26
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Schreiber Guldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:42
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/048; C; C23; C23F; C23F1/00; C23F1/02; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/053; H05K2203/00; H05K2203/13; H05K2203/1333; H05K2203/1344; H05K3/10; H05K3/14; H05K3/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A MASKING COMPOSITION FOR USE IN THE PRODUCTION OF PRINTED CIRCUITS THAT COMPRISES 2.5 TO 91 PARTS OF A FINELY DIVIDED POWDERED SUBSTANCE SELECTED FROM A GROUP CONSISTINGG OF OXIDES OF CERIUM, LANTHANUM, BARIUM, SILICON, ALUMINUM, AND TITANIUM; SAID POWDERED SUBSTANCE HAVING A MAXIMUM PARTICLE SIZE OF 50 MESH; 0.01 TO 97 PARTS OF A DILUENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, TRIETHYLENE GLYCOL, DIETHYLENE GLYCOL, A HIGH MOLECULAR WEIGHT ETHYLENE OXIDE POLYMER, AND A COPOLYMER OF METHYL VINYL ETHER AND MALEIC ANHYDRIDE;; 0.01 PART TO 8 PARTS OF POLYETHYLENEGLYCOL; TOGETHER WITH 0.25 PART OF 93 PARTS OF WATER, 0.001 PART TO 95 PARTS OF GLYCERINE, AND 0.01 PART TO 10 PARTS DIMETHYL SILICONE EMULSION.
Claim 2
Dependent Claim
119 words
A MASKING COMPOSITION FOR USE IN THE PRODUCTION OF PRINTED CIRCUITS THAT COMPRISES 2.5 TO 91 PARTS OF A FINELY DIVIDED POWDERED SUBSTANCE SELECTED FROM A GROUP CONSISTINGG OF OXIDES OF CERIUM, LANTHANUM, BARIUM, SILICON, ALUMINUM, AND TITANIUM; SAID POWDERED SUBSTANCE HAVING A MAXIMUM PARTICLE SIZE OF 50 MESH; 0.01 TO 97 PARTS OF A DILUENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, TRIETHYLENE GLYCOL, DIETHYLENE GLYCOL, A HIGH MOLECULAR WEIGHT ETHYLENE OXIDE POLYMER, AND A COPOLYMER OF METHYL VINYL ETHER AND MALEIC ANHYDRIDE;; 0.01 PART TO 8 PARTS OF POLYETHYLENEGLYCOL; TOGETHER WITH 0.25 PART OF 93 PARTS OF WATER, 0.001 PART TO 95 PARTS OF GLYCERINE, AND 0.01 PART TO 10 PARTS DIMETHYL SILICONE EMULSION.
References Cited (Backward Citations)
US2970064A
Cited
US2991188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |