One way of writing is to use "parts by weight" to limit the content of each constituent substance. The sum of parts by weight can be greater than 100. In fact, parts by weight can be regarded as a weight proportion relationship. For example, the composition includes 100 parts by weight of substance A and 100 parts by weight of substance B. Thus, it is convenient to define more components in the dependent claims. For example, the composition also includes 100 parts by weight of substance C. Similarly, volume parts, molar parts and the like can also be used.
Therefore, if the patent you mentioned is limited in this way, the sum of the parts by weight in the patent may exceed 100.