Patent US3216350A successfully refreshed from Google Patents.
US3216350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating process and products
Assignee: Individual
•
Filing: 1964-07-22
•
Granted: 1965-11-09
•
Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
- 👤 Sharkey Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:04
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/035; B41L; B41L19/00; B41L19/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
177 words
THE PROCESS FOR DUPLICATING MASTER IMAGES ONTO A SUCCESSION OF COPY SHEETS WHICH COMPRISES THE STEPS OF: (A) FORMING A MASTER SHEETS BY APPLYING TO A PAPER FOUNDATION SHEET A THIN SOLID COATING WHICH IS SUBSTANTIALLY NON-PRESSURE-TRANSFERABLE AND WHICH COMPRISES AT LEAST ONE SOLID SOLVENT MATERIAL WHICH, IN ITS MELTED STATE, IS A SOLVENT FOR A HECTOGRAPH DYESTUFF, (B) APPLYING OVER SAID SOLID COATING IMAGES WHICH CONTAIN AN UNDISSOLVED HECTOGRAPH DYSTUFF WHICH IS SOLUBLE IN THE MELTED SOLVENT MATERIAL OF THE COATING, SAID IMAGES HAVING A MELTING TEMPERATURE HIGHER THAN THE MELTING TEMPERATURE OF THE SAID SOLID COATING, AND (C) HEATING THE IMAGED MASTER SHEET TO A TEMPERATURE SUFFICIENTLY HIGH TO MELT THE SOLID COATING WITHOUT MELTING THE IMAGES, AND (D) PRESSING THE HEATED MASTER SHEET AGAINST A SUCCESSION OF COPY SHEETS WHEREBY THE MELTED SOLVENT MATERIAL DISSOLVES A PORTION OF THE HECTOGRAPH DYESTUFF ONTO EACH COPY SHEET SURFACE TO STRAIN EACH COPY SHEET SURFACE PRESSED THEREAGAINST TO FORM DISSOLVED DYESTUFF IMAGES ON THE COPY SHEETS IN AREAS CORRESPONDING TO THE IMAGED AREAS OF THE MASTER SHEET.
Claim 2
Dependent Claim
177 words
THE PROCESS FOR DUPLICATING MASTER IMAGES ONTO A SUCCESSION OF COPY SHEETS WHICH COMPRISES THE STEPS OF: (A) FORMING A MASTER SHEETS BY APPLYING TO A PAPER FOUNDATION SHEET A THIN SOLID COATING WHICH IS SUBSTANTIALLY NON-PRESSURE-TRANSFERABLE AND WHICH COMPRISES AT LEAST ONE SOLID SOLVENT MATERIAL WHICH, IN ITS MELTED STATE, IS A SOLVENT FOR A HECTOGRAPH DYESTUFF, (B) APPLYING OVER SAID SOLID COATING IMAGES WHICH CONTAIN AN UNDISSOLVED HECTOGRAPH DYSTUFF WHICH IS SOLUBLE IN THE MELTED SOLVENT MATERIAL OF THE COATING, SAID IMAGES HAVING A MELTING TEMPERATURE HIGHER THAN THE MELTING TEMPERATURE OF THE SAID SOLID COATING, AND (C) HEATING THE IMAGED MASTER SHEET TO A TEMPERATURE SUFFICIENTLY HIGH TO MELT THE SOLID COATING WITHOUT MELTING THE IMAGES, AND (D) PRESSING THE HEATED MASTER SHEET AGAINST A SUCCESSION OF COPY SHEETS WHEREBY THE MELTED SOLVENT MATERIAL DISSOLVES A PORTION OF THE HECTOGRAPH DYESTUFF ONTO EACH COPY SHEET SURFACE TO STRAIN EACH COPY SHEET SURFACE PRESSED THEREAGAINST TO FORM DISSOLVED DYESTUFF IMAGES ON THE COPY SHEETS IN AREAS CORRESPONDING TO THE IMAGED AREAS OF THE MASTER SHEET.
Claim 3
Dependent Claim
116 words
A HECTOGRAPH MASTER SHEET CARRYING UNDISSOLVED DYESTUFF IMAGES AND ADAPTED FOR THE PLACEMENT OF DUPLICATE DISSOLVED DYSTUFF IMAGES ON A CONVENTIONAL COPY SHEET BY MEANS OF HEAT AND IN THE ABSENCE OF SPIRIT DUPLICATING FLUIDS, WHICH COMPRISES A PAPER FOUNDATION SHEET HAVING THEREON A THIN SOLID COATING WHICH IS SUBSTANTIALLY NONPRESSURE-TRANSFERABLE AND WHICH CONTAINS AT LEAST ONE SOLID SOLVENT MATERIAL WHICH, IN ITS MELTED STATE, IS A SOLVENT FOR HECTOGRAPH DYESTUFF, AND HAVING ON SAID THID SOLID COATING AT LEAST ONE IMAGE COMPRISING HECTOGRAPH COMPOSITION HAVING A HIGHER MELTING TEMPERATURE THAN THE MELTING TEMPERATURE OF THE SAID THIN SOLID COATING AND CONTAINING UNDISSOLVED HECTOGRAPH DYSTUFF WHICH IS SOLUBLE IS THE MELTED SOLVENT MATERIAL OF SAID COATING.
Claim 4
Dependent Claim
116 words
A HECTOGRAPH MASTER SHEET CARRYING UNDISSOLVED DYESTUFF IMAGES AND ADAPTED FOR THE PLACEMENT OF DUPLICATE DISSOLVED DYSTUFF IMAGES ON A CONVENTIONAL COPY SHEET BY MEANS OF HEAT AND IN THE ABSENCE OF SPIRIT DUPLICATING FLUIDS, WHICH COMPRISES A PAPER FOUNDATION SHEET HAVING THEREON A THIN SOLID COATING WHICH IS SUBSTANTIALLY NONPRESSURE-TRANSFERABLE AND WHICH CONTAINS AT LEAST ONE SOLID SOLVENT MATERIAL WHICH, IN ITS MELTED STATE, IS A SOLVENT FOR HECTOGRAPH DYESTUFF, AND HAVING ON SAID THID SOLID COATING AT LEAST ONE IMAGE COMPRISING HECTOGRAPH COMPOSITION HAVING A HIGHER MELTING TEMPERATURE THAN THE MELTING TEMPERATURE OF THE SAID THIN SOLID COATING AND CONTAINING UNDISSOLVED HECTOGRAPH DYSTUFF WHICH IS SOLUBLE IS THE MELTED SOLVENT MATERIAL OF SAID COATING.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |