[Code of Federal Regulations]
[Title 37, Volume 1]
[Revised as of July 1, 1999]
From the U.S. Government Printing Office via GPO Access
[CITE: 37CFR1.58]

[Page 40-41]
 
             TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS
 
    CHAPTER I--PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE
 
PART 1--RULES OF PRACTICE IN PATENT CASES--Table of Contents
 
                Subpart B--National Processing Provisions
 
Sec. 1.58  Chemical and mathematical formulae and tables.

    (a) The specification, including the claims, may contain chemical 
and mathematical formulas, but shall not contain drawings or flow 
diagrams. The description portion of the specification may contain 
tables; claims may contain tables either if necessary to conform to 35 
U.S.C. 112 or if otherwise found to be desirable.
    (b) [Reserved]
    (c) Chemical and mathematical formulae and tables must be presented 
in compliance with Sec. 1.52 (a) and (b), except that chemical and 
mathematical formulae or tables may be placed in a landscape orientation 
if they cannot be presented satisfactorily in a portrait orientation. 
Typewritten characters used in such formulae and tables must be chosen 
from a block (nonscript) type

[[Page 41]]

font or lettering style having capital letters which are at least 0.21 
cm. (0.08 inch) high (e.g., elite type). A space at least 0.64 cm. (\1/
4\ inch) high should be provided between complex formulae and tables and 
the text. Tables should have the lines and columns of data closely 
spaced to conserve space, consistent with a high degree of legibility.


(Pub. L. 94-131, 89 Stat. 685)

[43 FR 20463, May 11, 1978, as amended at 61 FR 42803, Aug. 19, 1996]