Drafting material

Patent 4824725 Issued on April 25, 1989. Estimated Expiration Date:

December 15, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3396046

3563942

3720539

3734874

Composition suitable for use as an adhesive layer on a shaped structure of a polyester
Patent #: 4139506
Issued on: 02/13/1979
Inventor: Thoese , et al.

Polyester coated films using an aqueous polyester dispersion and photographic layer
Patent #: 4252885
Issued on: 02/24/1981
Inventor: McGrail , et al.

Drafting film
Patent #: 4500598
Issued on: 02/19/1985
Inventor: Thoese

Recording medium
Patent #: 4542059
Issued on: 09/17/1985
Inventor: Toganoh , et al.

Drafting material
Patent #: 4543316
Issued on: 09/24/1985
Inventor: Thoese

Ink jet transparency Patent #: 4575465
Issued on: 03/11/1986
Inventor: Viola

Inventor

Thoese, Klaus

Application

No. 07/133485 filed on 12/15/1987

US Classes:

428/336, 1 mil or less428/195.1, Discontinuous or differential coating, impregnation or bond (e.g., artwork, printing, retouched photograph, etc.)428/480, Of polyester (e.g., alkyd, etc.)428/482, Of cross-linked polyester428/483, Next to addition polymer from unsaturated monomers428/520, Ester, halide or nitrile of addition polymer428/522, Ester, halide or nitrile of addition polymer428/524, Of aldehyde or ketone condensation product428/910, PRODUCT WITH MOLECULAR ORIENTATION430/157, Diazonium compound containing layer430/158Including subbing layer

Examiners

Primary: Robinson, Ellis P.
Assistant: Schwartz, P. R.

Attorney, Agent or Firm

Foley & Lardner, Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans

International Classes

B44D 3/18 (20060101)
B41M 5/50 (20060101)
B41M 5/52 (20060101)
C08J 7/00 (20060101)
C08J 7/04 (20060101)

Foreign Application Priority Data

1986-12-16 DE

Abstract

Disclosed is a drafting material comprising a transparent base material with a hydrophilic coating which readily accepts ink, ensures rapid drying of the ink and can be marked in a wipe-resistant manner. The hydrophilic coating of the drafting material includes sulfonate group-containing copolyesters which are preferably present in an amount of 30 to 70 percent by weight. The drafting material can be marked with felt-tip pens containing aqueous inks.