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Claim 1

THE METHOD OF FORMING DEPOSITS OF PYROLYTIC CARBON SO ATTACHED TO A SUBSTRATE THAT THE NORMAL AXES OF THE DEPOSIT ARE AT A PREDETERMINED ACUTE ANGLE WITH THE SURFACE OF THE SUBSTRATE WHICH COMPRISES: PROVIDING THE SAID SUBSTRATE WITH PROTRUSIONS EACH OF CIRCULAR SYMMETRY AROUND A CENTRAL AXIS, THE CENTRAL AXIS OF EACH PROTRUSION MAKING WITH A NORMAL TO THE SURFACE OF THE SUBSTRATE AN ANGLE EQUAL TO THE SAID PREDETERMINED ANGLE, SAID PROTRUSIONS HAVING LENGHTS SUFFICIENT TO ENSURE ORIENTATION PARALLEL TO THE SURFACE OF THE PROTRUSIONS IN THE INTERSTICES BETWEEN THE PROTRUSIONS, SAID PROTRUSIONS ALSO HAVING LIMITED SPACE THEREBETWEEN TO PREVENT ANY SUBSTANTIAL AMOUNT OF ORIENTATION PARALLEL TO THE SURFACE OF THE SUBSTRATE, CAUSING THE DEPOSITION OF PYROLYTIC CARBON BY DESTRUCTIVE DECOMPOSITION OF CARBONIFEROUS GASES TO OCCUR ON THE SAID PROTRUSIONS UNTIL THE INTERSTICES BETWEEN THE PROTRUSIONS ARE FILLED WITH PYROLYTIC CARBON.

Claim 2

THE METHOD OF FORMING DEPOSITS OF PYROLYTIC CARBON SO ATTACHED TO A SUBSTRATE THAT THE NORMAL AXES OF THE DEPOSIT ARE AT A PREDETERMINED ACUTE ANGLE WITH THE SURFACE OF THE SUBSTRATE WHICH COMPRISES: PROVIDING THE SAID SUBSTRATE WITH PROTRUSIONS EACH OF CIRCULAR SYMMETRY AROUND A CENTRAL AXIS, THE CENTRAL AXIS OF EACH PROTRUSION MAKING WITH A NORMAL TO THE SURFACE OF THE SUBSTRATE AN ANGLE EQUAL TO THE SAID PREDETERMINED ANGLE, SAID PROTRUSIONS HAVING LENGHTS SUFFICIENT TO ENSURE ORIENTATION PARALLEL TO THE SURFACE OF THE PROTRUSIONS IN THE INTERSTICES BETWEEN THE PROTRUSIONS, SAID PROTRUSIONS ALSO HAVING LIMITED SPACE THEREBETWEEN TO PREVENT ANY SUBSTANTIAL AMOUNT OF ORIENTATION PARALLEL TO THE SURFACE OF THE SUBSTRATE, CAUSING THE DEPOSITION OF PYROLYTIC CARBON BY DESTRUCTIVE DECOMPOSITION OF CARBONIFEROUS GASES TO OCCUR ON THE SAID PROTRUSIONS UNTIL THE INTERSTICES BETWEEN THE PROTRUSIONS ARE FILLED WITH PYROLYTIC CARBON.