Patents
US 7731831 B2: Method for manufacturing a composite material including copper foil and support layer
- Granted
- 2010-06-08
- Filed
- 2006-11-07 application 11593949
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A composite material useful for the manufacture of a circuit has a support layer, a metal foil layer having opposing first and second sides and a thickness of 15 microns or less and a release layer effective to facilitate separation of the metal foil layer from the support layer, the release layer disposed between and contacting both the support layer and the metal foil layer. A reactive element containing layer, which may be the support layer, effective to react with gaseous elements or compounds to form thermally stable compounds contacts the release layer. The composite material is preferably subjected to a low temperature heat treatment. The combination of the low temperature heat treatment and the reactive element containing layer results in reduced defects including blisters in the copper foil during subsequent processing.
Source: PVGPATDIS, file of 2026-04-10 (ipg100608.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| GBC Metals, LLC 3 patents | US company or organization | East Alton, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| William L. Brenneman | Cheshire, CT | 1 | PVGPATDIS, file of 2026-04-10 | |
| Szuchain Chen | Hamden, CT | 2 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C25D | Processes for the electrolytic or electrophoretic production of coatings; electroforming; apparatus therefor | C25D7/0614 | PVGPATDIS, file of 2026-04-10 |
| C23C | Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general | C23C26/00 | PVGPATDIS, file of 2026-04-10 |
| H05K | Printed circuits; casings or constructional details of electric apparatus; manufacture of assemblages of electrical components | H05K3/025 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T428/12 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2016-07-19 | Release of security interest Release of security interest recorded at reel/frame 28300/0834 | WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT signed 2016-07-18 | GBC METALS, LLC (FORMERLY GLOBAL METALS, LLC) EAST ALTON, IL | 39394/259 | ECORSEXC, file of 2026-09-25 |
| 2016-07-19 | Release of security interest Release of security interest recorded at reel/frame 20143/0178 | WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT, SUCCESSOR BY MERGER TO WACHOVIA BANK, NATIONAL ASSOCIATION, AS AGENT signed 2016-07-18 | GLOBAL METALS, LLC SCHAUMBURG, IL | 39394/201 | ECORSEXC, file of 2026-09-25 |
| 2016-07-19 | Security interest Security interest Security interest (term loan) | GBC METALS, LLC (F/K/A GLOBAL METALS, LLC) signed 2016-07-18 | JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT CHICAGO, IL | 39394/189 | ECORSEXC, file of 2026-09-25 |
| 2016-07-19 | Security interest Security interest Security interest | GBC METALS, LLC (F/K/A GLOBAL METALS, LLC) signed 2016-07-18 | JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT CHICAGO, IL | 39394/160 | ECORSEXC, file of 2026-09-25 |
| 2016-07-19 | Release of security interest Release of security interest recorded at reel/frame 24990/0283 | WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT, SUCCESSOR BY MERGER TO WACHOVIA BANK, NATIONAL ASSOCIATION, AS AGENT signed 2016-07-18 | GBC METALS, LLC SCHAUMBURG, IL | 39394/103 | ECORSEXC, file of 2026-09-25 |
| 2012-06-01 | Security interest Security interest Patent security agreement | GBC METALS, LLC signed 2012-06-01 | WELLS FARGO BANK, NATIONAL ASSOCIATION MINNEAPOLIS, MN | 28300/834 | ECORSEXC, file of 2026-09-25 |
| 2012-06-01 | Release of security interest Release of security interest in patents | GOLDMAN SACHS LENDING PARTNERS LLC signed 2012-06-01 | GLOBAL BRASS AND COPPER, INC. SCHAUMBURG, IL GBC METALS, LLC LOUISVILLE, KY | 28300/731 | ECORSEXC, file of 2026-09-25 |
| 2010-09-16 | Correction Amendment no. 1 patent agreement, to patent agreement recorded on 11/27/01, reel 20156, frame 0265. | GBC METALS, LLC signed 2010-08-18 | WELLS FARGO BANK, NATIONAL ASSOCIATION NEW YORK, NY | 24990/283 | ECORSEXC, file of 2026-09-25 |
| 2010-09-07 | Security interest Security interest Security agreement | GBC METALS, LLC signed 2010-08-18 | GOLDMAN SACHS LENDING PARTNERS LLC, AS COLLATERAL AGENT JERSEY CITY, NJ | 24946/656 | ECORSEXC, file of 2026-09-25 |
| 2010-08-19 | Release of security interest Release of security interest | KPS CAPITAL FINANCE MANAGEMENT, LLC signed 2010-08-18 | GBC METALS, LLC EAST ALTON, IL | 24858/985 | ECORSEXC, file of 2026-09-25 |
| 2008-04-03 | Name change Change of name | GLOBAL METALS, LLC signed 2007-12-13 | GBC METALS, LLC EAST ALTON, IL | 20741/549 | ECORSEXC, file of 2026-09-25 |
| 2007-11-27 | Security interest Security interest Security agreement | GLOBAL METALS, LLC signed 2007-11-19 | KPS CAPITAL FINANCE MANAGEMENT, LLC NEW YORK, NY | 20196/73 | ECORSEXC, file of 2026-09-25 |
| 2007-11-27 | Correction Corrective assignment to correct the conveying party name from global market, llc to global metals, llc previously recorded on reel 020143 frame 0178. assignor(s) hereby confirms the security agreement. | GLOBAL METALS, LLC signed 2007-11-19 | WACHOVIA BANK, NATIONAL ASSOCIATION NEW YORK, NY | 20156/265 | ECORSEXC, file of 2026-09-25 |
| 2007-11-21 | Security interest Security interest Security agreement | GLOBAL MARKET signed 2007-11-19 | WACHOVIA BANK, NATIONAL ASSOCIATION NEW YORK, NY | 20143/178 | ECORSEXC, file of 2026-09-25 |
| 2007-11-19 | Assignment Assignment of assignor's interest | OLIN CORPORATION signed 2007-11-19 | GLOBAL METALS, LLC EAST ALTON, IL | 20125/985 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.