Patent US2122972A successfully refreshed from Google Patents.
Patent US3607354A successfully refreshed from Google Patents.
US3607354A
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Method of delustering polyethylene terephthalate film
Assignee: 3M Co
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Filing: 1969-11-14
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Granted: 1971-09-21
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Expires: 1989-11-14
Abstract
Abstract The normally lustrous surface of a polyethylene terephthalate film is delustered and made capable of forming a strong adherent bond with adhesive compositions. The film is treated with a coating of a hydroxybenzene derivative solvent primer material.
Inventors
- 👤 Lester C Krogh
- 👤 Richard E Brink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:42
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; B; B24; B24D; B24D11/00; B24D11/02; C08J7/043; C08J7/046; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
The method of claim 1 wherein the hydroxybenzene derivative is a chlorinated phenol.
Claim 2
Dependent Claim
11 words
The method of claim 2 wherein the chlorinated phenol is ortho-chlorophenol.
Claim 3
Dependent Claim
11 words
The method of claim 2 wherein the chlorinated phenol is para-chlorophenol.
Claim 4
Independent Claim
101 words
The method of making a coated sheet material having a layer of particulate matter firmly adherently bonded to a surface of an oriented polyalkylene terephthalate film which includes the steps of delustering the normally lustrous surface of said film with a hydroxybenzene derivative solvent primer material, said hydroxybenzene derivative consisting essentially of a compound selected from the group consisting essentially of ortho-chlorophenol, meta-chlorophenol, para-chlorophenol, parabromophenol, resorcinol, phenol, catechol, ortho cresol, meta cresol, para cresol and 2,4 dichlorophenol, applying to the delustered surface a layer of solid particles dispersed in a liquid binder, and then hardening the binder to a solid state.
Claim 5
Dependent Claim
12 words
The method of claim 5 wherein the solid particles are abrasive granules.
References Cited (Backward Citations)
USRE16535E
Cited
US2236597A
Cited
US2219853A
Cited
US2111272A
Cited
US2165955A
Cited
US2444830A
Cited
US2317650A
Cited
US2357350A
Cited
US2339500A
Cited
US2567186A
Cited
US2598090A
Cited
US2790727A
Cited
US2641592A
Cited
US2650213A
Cited
US2712987A
Cited
US2711365A
Cited
US2673826A
Cited
US2774679A
Cited
US2779668A
Cited
US2785085A
Cited
US2848350A
Cited
US2745224A
Cited
US2893896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |