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US3679476A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of coating synthetic resin base

Assignee: US Philips Corp
•
Filing: 1970-04-01
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Granted: 1972-07-25
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Expires: 1990-04-01
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Abstract

Abstract A METHOD OF COATING A SUPPORT BASE OF A SYNTHETIC MATERIAL, WITH A LAYER OF LACQUER FOR PARTICULAR APPLICATION IN MANUFACTURING MAGNETIC TAPE. THE LACQUER IS FORCED THROUGH A POURING SLIT INTO A PRESSURE CHAMBER WHERE IT IS TEMPORARILY STORED IN CONTACT WITH THE SUPPORT BASE. THE SUPPORT IS GUIDED ALONG THE STORED LACQUER UNDER A TENSILE STRESS AND THE SUPPORT WITH THE ADHERING LAYER OF LACQUER IS THEN GUIDED ALONG A SMOOTHING SIDE IN SUCH MANNER THAT THE PARTS OF THE SUPPORT IN FRONT OF AND BEHIND THE SMOOTHING SIDE FORM AN ANGLE SO THAT THE LAYER IS EQUALIZED. THE PRESSURE IN THE PRESSURE CHAMBER CAN BE CONTROLLED BY CONTROLLING THE ANGLE, THE TENSILE STRESS AND THE QUANTITY OF LACQUER SUPPLIED PER UNIT OF TIME SO THAT THE THICKNESS OF THE LAYER IS ALSO CONTROLLED.

Inventors

  • 👤 Gerard Willem Van Oosterhout
  • 👤 Hendrikus Johannes Lemmen
  • 👤 Cornelis Johannes Klomp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 13:33
CPC Classifications
B; B05; B05C; B05C5/00; B05C5/02; B05C5/0254; B05D; B05D3/00; B05D3/04; B05D3/0486; B05D7/00; B05D7/02; B05D7/04; G; G11; G11B; G11B5/00; G11B5/84; G11B5/842; Y; Y10; Y10S; Y10S428/00; Y10S428/90

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1975-07-25 1976-01-24 1976-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-25 1980-01-24 1980-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-25 1984-01-24 1984-07-25 $7700.00 Window Closed / Lapsed

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