Patent US2849299A successfully refreshed from Google Patents.
US2849299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chem-milling honeycomb structures
Assignee: Individual
•
Filing: 1956-08-31
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Granted: 1958-08-26
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Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Harold S Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; C23F1/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
IN A CHEM-MILLING PROCESS FOR HONECOMB STRUCTURES, THE STEPS OF COATING THE ENTIRE HONEYCOMB STRUCTURE WITH A TACKY SUBSTANCE, PLACING THE HONEYCOMB STRUCTURE IN A TANK A WATER WITH THE LIQUID LEVEL COINCIDING WITH A PLANE ALONG A LINE WHERE IT IS DESIRED TO REMOVE PORTIONS OF THE HONEYCOMB STRUCTURE, SPRAYING THE PROJECTING PORTION OF THE HONEYCOMB STRUCTURE WITH AN ETCHING ACID-RESIST, REMOVING THE MASKED HONEYCOMB STRUCTURE AND FINALLY IMMERSING THE SAME IN AN AQUEOUS ETCHANT BATH.
Claim 2
Dependent Claim
77 words
IN A CHEM-MILLING PROCESS FOR HONECOMB STRUCTURES, THE STEPS OF COATING THE ENTIRE HONEYCOMB STRUCTURE WITH A TACKY SUBSTANCE, PLACING THE HONEYCOMB STRUCTURE IN A TANK A WATER WITH THE LIQUID LEVEL COINCIDING WITH A PLANE ALONG A LINE WHERE IT IS DESIRED TO REMOVE PORTIONS OF THE HONEYCOMB STRUCTURE, SPRAYING THE PROJECTING PORTION OF THE HONEYCOMB STRUCTURE WITH AN ETCHING ACID-RESIST, REMOVING THE MASKED HONEYCOMB STRUCTURE AND FINALLY IMMERSING THE SAME IN AN AQUEOUS ETCHANT BATH.
Claim 3
Dependent Claim
62 words
IN A PROCESS OF CHEM-MILLING HONEYCOMB STRUCTURES THE STEPS OF FORMING A GEOMETRICAL FIGURE FROM A WAX BODY TO CONFORM TO THE SHAPE OF THE DESIRED WORKPIECE, PRESSING THE HONEYCOMB STRUCTURE DOWNWARD ON THE WAX-LIKE BODY WHILE THE SAME IS SUPPORTED ON A WORK SURFACE, AND FINALLY PLACING THE HONEYCOMB STRUCTURE WITH THE WAX-LIKE BODY IMBEDDED THEREIN IN AN AQUEOUS ETCHANT BATH.
Claim 4
Dependent Claim
62 words
IN A PROCESS OF CHEM-MILLING HONEYCOMB STRUCTURES THE STEPS OF FORMING A GEOMETRICAL FIGURE FROM A WAX BODY TO CONFORM TO THE SHAPE OF THE DESIRED WORKPIECE, PRESSING THE HONEYCOMB STRUCTURE DOWNWARD ON THE WAX-LIKE BODY WHILE THE SAME IS SUPPORTED ON A WORK SURFACE, AND FINALLY PLACING THE HONEYCOMB STRUCTURE WITH THE WAX-LIKE BODY IMBEDDED THEREIN IN AN AQUEOUS ETCHANT BATH.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |