Patent US3438829A successfully refreshed from Google Patents.
US3438829A
Expired / Lapsed
US
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Process for preparing breathable fabric laminates
Assignee: Rohm and Haas Co
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Filing: 1966-06-28
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Granted: 1969-04-15
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Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 Beresford Coe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:32
CPC Classifications
D; D06; D06M; D06M17/00; D06M17/04; C; C08; C08J; C08J9/00; C08J9/30; D06N; D06N3/00; D06N3/04; D06N3/042; D06N2205/00; D06N2205/02; D06N2205/023; D06N2205/04; D06N2205/045; D06N2209/00; D06N2209/12; D06N2209/121; D06N2209/123; D06N2209/16; D06N2209/1664; D06N2211/00; D06N2211/10; D06N2211/12; D06N2211/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/2481; Y10T428/26; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/365; Y10T442/3667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A METHOD OF PREPARING LAMINATES WHICH COMPRISES: (A) FROTHING OF AN ELASTOMERIC ADHESIVE EMULSION SO AS TO INCREASE IN VOLUME BY ABOUT 15 TO 400%. (B) DEPOSITING THE FROTHED EMULSION IN SUFFICIENT THICKNESS ON A RELEASE SURFACE SO AS TO GIVE A POROUS FILM WHICH WHEN SUBSTANTIALLY DRIED HAS A THICKNESS IN THE RANGE OF 0.001 TO 0.010 INCH, (C) DRYING SAID FROTHED EMULSION AS AS TO REDUCE THE MOISTURE CONTENT TO THE RANGE OF 0 TO 15% BASED ON THE TOTAL WEIGHT OF THE POROUS FILM, (D) TRANSFERRING THE SUBSTANTIALLY DRIED POROUS FILM TO A BACKING FABRIC, (E) LAMINATING A FINISHING FABRIC ONTO THE BACKING FABRIC WITH AN EFFECTIVE AMOUNT OF POROUS ADHESIVE FILM SANDWICHED BETWEEN THE TWO FABRICS, AND (F) CURING THE LAMINATE.
Claim 2
Independent Claim
125 words
A METHOD OF PREPARING LAMINATES WHICH COMPRISES: (A) FROTHING OF AN ELASTOMERIC ADHESIVE EMULSION SO AS TO INCREASE IN VOLUME BY ABOUT 15 TO 400%. (B) DEPOSITING THE FROTHED EMULSION IN SUFFICIENT THICKNESS ON A RELEASE SURFACE SO AS TO GIVE A POROUS FILM WHICH WHEN SUBSTANTIALLY DRIED HAS A THICKNESS IN THE RANGE OF 0.001 TO 0.010 INCH, (C) DRYING SAID FROTHED EMULSION AS AS TO REDUCE THE MOISTURE CONTENT TO THE RANGE OF 0 TO 15% BASED ON THE TOTAL WEIGHT OF THE POROUS FILM, (D) TRANSFERRING THE SUBSTANTIALLY DRIED POROUS FILM TO A BACKING FABRIC, (E) LAMINATING A FINISHING FABRIC ONTO THE BACKING FABRIC WITH AN EFFECTIVE AMOUNT OF POROUS ADHESIVE FILM SANDWICHED BETWEEN THE TWO FABRICS, AND (F) CURING THE LAMINATE.
References Cited (Backward Citations)
US3383263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |