US2610136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of corrugated paperboard
Assignee: Primary Products Ingredients Americas LLC
•
Filing: 1946-05-01
•
Granted: 1952-09-09
•
Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 James P Casey
- 👤 Robert A Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
C; C09; C09J; C09J103/00; C09J103/02; C08; C08K; C08K3/00; C08K3/38; C08K2003/387
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN THE PROCESS OF MAKING CORRUGATED PAPERBOARD WHEREIN A LINER PLY IS BONDED TO THE CORRUGATED PLY BY MEANS OF A HEAT-GELLING AMYLACEOUS ADHESIVE, THE IMPROVEMENT COMPRISING: APPLYING TO ONE OF SAID PLIES, ON THE SURFACE TO BE JOINED, AN AQUEOUS ADHESIVE COMPOSITION OF WHICH THE SOLE AMYLACEOUS INGREDIENT IS UNGELATINIZED, MODIFIED STARCH, SAID STARCH HAVING BEEN MODIFIED BY MILLING AT A 10 TO 40% MOISTURE CONTENT ON DIFFERENTIAL ROLLS BELOW ITS PASTING TEMPERATURE, TO SUCH AN EXTENT THAT THE STARCH GRANULES PARTIALLY SWELL IN COLD WATER YIELDING A FLUID SUSPENSION RELATIVELY STABLE IN REGARD TO VISCOSITY CHANGES AND SEDIMENTATION; ASSEMBLING THE PLIES AND HEATING THE ASSEMBLY, WHEREBY GELATINIZATION OF THE STARCH AND BONDING OF THE PLIES OCCUR.
Claim 2
Dependent Claim
118 words
IN THE PROCESS OF MAKING CORRUGATED PAPERBOARD WHEREIN A LINER PLY IS BONDED TO THE CORRUGATED PLY BY MEANS OF A HEAT-GELLING AMYLACEOUS ADHESIVE, THE IMPROVEMENT COMPRISING: APPLYING TO ONE OF SAID PLIES, ON THE SURFACE TO BE JOINED, AN AQUEOUS ADHESIVE COMPOSITION OF WHICH THE SOLE AMYLACEOUS INGREDIENT IS UNGELATINIZED, MODIFIED STARCH, SAID STARCH HAVING BEEN MODIFIED BY MILLING AT A 10 TO 40% MOISTURE CONTENT ON DIFFERENTIAL ROLLS BELOW ITS PASTING TEMPERATURE, TO SUCH AN EXTENT THAT THE STARCH GRANULES PARTIALLY SWELL IN COLD WATER YIELDING A FLUID SUSPENSION RELATIVELY STABLE IN REGARD TO VISCOSITY CHANGES AND SEDIMENTATION; ASSEMBLING THE PLIES AND HEATING THE ASSEMBLY, WHEREBY GELATINIZATION OF THE STARCH AND BONDING OF THE PLIES OCCUR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |